Computer Glossary

Transcript

Computer Glossary Computer Glossary ACM AA AAA AAB AAC AACS AAL Layer AAM AAP AARP Auto Answer Authentication, Authorization and Accounting All-to-All Broadcast Advanced Audio Coding Advanced Access Control System Asynchronous Transfer Mode Adaption Automatic Acoustic Management Applications Access Point [DEC] AppleTalk Address Resolution Protocol AAS All-to-All Scatter AASP ASCII Asynchronous Support Package AAT Average Access Time AATP Authorized Academic Training Program [Microsoft] .ABA Address Book Archive (file name extension) [Palm] ABAP Advanced Business Application Programming [SAP] ABC * Atanasoff-Berry Computer (First digital calculating machine that used vacuum tubes) ABEND Abnormal End ABI Application Binary Interface ABIOS Advanced BIOS ABIST Automatic Built-In Self-Test [IBM] ABLE Adaptive Battery Life Extender + Agent Building and Learning Environment [IBM] ABM Asynchronous Balanced Mode ABR Available Bit Rate ABRD Automatic Baud Rate Detection ABRS Automated Book Request System [British Library] ABS Address Book Synchronization [IBM] + Absolute ABT Abort ABTS ASCII Block Terminal Services AC Autocheck + Automatic Computer + Alternating Current ACAP Application Configuration Access Protocol ACC Accumulator ACCMAIL Accessing the Internet Via Email ACD Automatic Call Distribution ACDI Asynchronous Communications Device Interface ACE Access Control Encryption/Entry + Adobe Certified Expert + Advanced Composition Explorer [JHUAPL] + Advanced Computing Environment [SCO] + Adverse Channel Enhancements [Microcom] + * Automatic Computing Engine ACF Access Control Field + Advanced Communications Function ACH Automated Clearing House ACIAS Automated Calibration Interval Analysis System ACIS American Committee for Interoperable Systems ACK Acknowledgment ACL Access Control List + Asynchronous Connection-Less (link) Association for Computing Machinery Audio Compression Manager [Microsoft] ACMS Application Control Management System ACP Ancillary Control Program + Auxiliary Control Process ACPI Advanced Configuration and Power Interface ACR Allowed Cell Rate ACROSS Automated Cargo Release and Operations Service System ACS Access + Access Control Set + Access Control System + * Advanced Computer System [IBM] + Anti Curl System + Asynchronous Communication Server ACSS Audio Cascading Style Sheets ACTLU Active Logical Unit ACTPU Active Physical Unit ACTS Automated Computer Time Service ACTT Advanced Communication and Timekeeping Technology [Seiko] ACU Automatic Calling Unit ACVC Ada Compiler Validation Capacity A/D Analog to Digital ADA Automatic Data Acquisitions + (Programming Language named after Augusta Ada Lovelace) ADB Apple Desktop Bus ADC Adaptive Data Compression (protocol) [Hayes] + Add with Carry + Analog to Digital Converter ADCCP Advanced Data Communication Control Procedures/Protocol ADD Automatic Document Detection [WordPerfect] ADF Automatic Document Feeder + Automatically Defined Function .ADF Adapter Description File (file name extension) ADI AutoCad/AutoDesk Device Interface (driver) ADIOS Automated Download and Installation of Operating Systems [Queensland U.] ADL Address Data Latch ADLAT Adaptive Lattice Filter ADLC Adaptive Lossless Data Compression [IBM] + Asynchronous Data Link Control ADMACS Apple Document Management And Conrol System ADMD Administrative Management Domain [X.400] .ADN Add In Utility (file name extension) [Lotus 1-2-3] [LDC] ADO ActiveX Data Objects ADP AOLserver Dynamic Pages + Automatic Data Processing ADPCM Adaptive Differential Pulse Code Modulation ADR Address ADS Application Development Solutions [AT&T] + Application Development System + Automatic Distribution System ADSC Address Status Changed + Adobe Document Structuring Conventions ADSI Active Directory Service Interface [Microsoft] + Analog Display Services Interface ADSL (See DSL) ADSP AppleTalk Datastream Protocol ADSR Attack, Decay, Sustain, Release ADT Abstract Data Type + Application Data Types ADU Automatic Dialing Unit AE Above or Equal AEB Analog Expansion Bus [Dialogic] AEC Architecture, Engineering, Construction AEM Asynchronous Event Mechanism .AERO Aviation Industry (Domain Name) [Internet] AES Advanced Encryption Standard AESA ATM End System Address AF Auxiliary carry Flag AFA Accelerated File Access AFC Antiferro-Magnetically Coupled (media) [IBM] + Automatic Font Change + Automatic Frequency Control AFD Automatic File Distribution AFDW Active Framework for Data Warehousing [Microsoft] AFI Authority and Format Identifier AFII Association for Font Information Interchange AFIRM Automated Fingerprint Image Reporting and Match AFIS Automated Fingerprint Identification System .AFM Adobe Font Metrics (file name extension) [Adobe Systems] AFP Advanced Function Presentation [IBM] + Advanced Function Printing + Appletalk Filing Protocol [Macintosh] AFS Andrew File System (protocols) AFTP Advanced/Anonymous File Transfer Protocol AGA Advanced Graphics Adapter AGC Automatic Gain Control AGP Accelerated/Advanced Graphics Port AGRAS Antiglare-Antireflective-Antistatic AGU Address-Generation Unit AH Authentication Header (protocol) AHS Automated Highway Systems AI Analog Input + Artificial Intelligence AIA Applications Integration Architecture [DEC] AIC AIXwindows Interface Composer [IBM] AIFF Audio Interchange File Format AIIM Association for Information and Image Management AIM AOL Instant Messenger AIN Advanced Intelligent Network [Bell Atlantic] AIO All-In-One AIP Application Infrastruture Provider AIR Architecture Implementation Review AIS Automated Identification System [NCIC] + Automated Information Systems AISB Association of Imaging Service Bureaus AISP Association of Information Systems Professionals AIT Advanced Intelligent Tape (drive) [Sony] AIX Advanced Interactive Executive [IBM] AJAX Asynchronous JavaScript and XML ALAT Advanced Load Address Table ALC Arithmetic and Logic Circuits + Automatic Level Control ALE Address Latch Enable + Application Linking and Embedding ALGOL Algorithmic Oriented Language (see IAL) ALIBI Adaptive Location of Internetworked Bases of Information ALICE Artificial Linguistic Internet Computer Entity ALINK Active Link [HTML] ALIWEB Archie Like Indexing in the Web [Internet] ALM Asset Liability Management ALN Asynchronous Learning Network ALOS Alternate Lighting Of Surfaces ALP Automatic Language Processing ALR Advanced Logic Research, Inc. ALT Alternate (mode) ALT. Alternate lifestyle [USENET Newsgroup Category] ALU Arithmetic Logic Unit AM Amplitude Modulation AMA Automatic Message Accounting AMANDDA Automated Messaging and Directory Assistance AMASS Archival Management and Storage System AMD Active Matrix Display + Advanced Micro Devices, Inc. AMDD Agile Modelling Driven Development AMI Alternate Mark Inversion + American Megatrends, Inc. + Application Messaging Interface AMMA Advanced Memory Management Architecture [Everex Systems] AMPL Algebraic/Applied Mathematical Programming Language AMPS Advanced Mobile Phone Service + Amplifiers AMR Audio Modem Riser ANCOVA Analysis of Covariance ANDF Architecture-Neutral Distribution Format ANI Automatic Number Identification .ANI Animated Cursor (file name extension) [Microsoft] ANN Artificial Neural Network .ANN Annotations (file name extension) [IBM] ANOVA Analysis Of Variance ANSI American National Standards Institute ANX Automotive Network Exchange [Chrysler/Ford/ General Motors] AO Analog Output AOCE Apple Open Collaboration Environment AO/DI Always On/Dynamic ISDN AODV Ad Hoc On-Demand Distance Vector AOE Application Operating Environment [AT&T] AOL America Online AOS Add Or Subtract AP Adjunct Processor + Application Processor A/P Accounts Payable APA Adaptive Packet Assembly + All Points Addressable + Arithmetic Processing Accelerator APAR Authorized Program Analysis Report [IBM] APAREN Address Parity Enable [IBM] APCUG Association of PC User Groups APDU Application Protocol Data Units API Application Program Interface APIC Advanced Programmable Interrupt Controller (bus) [Intel] APIPA Automatic Private Interenet Protocol Addressing APIS Advanced Passenger Information System APL * A Programming Language (Mathematics) APM Advanced Power Management [IBM] APNIC Asia-Pacific Network Information Center [Internet] APOP Authenticated Post Office Protocol .APP Application (file name extension) [R:Base] APPC Advanced Program-to-Program Communications [IBM] APPI Advanced Peer-to-Peer Internetworking APPLETS Applications APPN Advanced Peer-to-Peer Networking [IBM] APPS Applications APR Annual Percentage Rate APRP Adaptive Pattern Recognition Processing APS Active Pixel Sensor + Advanced Photo System + Advanced Printing Service [IBM] + Asynchronous Protocol Specification APSE ADA Programming Support Environment APT Address Pass Through + Advanced Parallel Technology + Automatically Programmed Tools A/R Accounts Receivable ARA AppleTalk Remote Access ARAG Antireflective-Antiglare ARAS Antireflective-Antistatic ARC Acoustic Resonance Control .ARC Archive (file name extension) ARCA Advanced RISC Computing Architecture ARCnet Attached Resource Computer Network .ARJ Compressed File (file name extension) [Jung] ARL Adjusted Ring Length ARLL Advanced Run Length Limited ARM Advanced RISC Machine (processor) + Annotated Reference Manual + Asynchronous Response Mode ARMA Association of Records Managers and Administrators ARP Address Resolution Protocol [Novell] ARPANET Advanced Research Projects Agency Network ARPL Adjust Requested Privilege Level ARS Activity Reporting System [Unisys] ART Adaptive Resonance Theory (algorithm) ARTA Apple Real Time Architecture ARTIC A Real-Time Interface Coprocessor [IBM] ARTS Asynchronous Remote Takeover Server .ARTS Cultural Groups (Domain Name) [Internet] ARTT Asynchronous Remote Takeover Terminal ARQ Automatic Repeat Request ARU Audio Response Unit + Average Retail Value AS Autonomous System [Internet] ASAI Adjunct Switch Application Interface [AT&T] ASAP As Soon As Possible + Automatic Switching And Processing AS3AP ANSI SQL Standard Scalable and Portable ASB Advanced System Buffering [Intel] .ASC ASCII text (file name extension) ASCC * Automatic Sequence Controlled Calculator [IBM] ASCII American Standard Code for Information Interchange ASD Application Structure Database [Microsoft] + Automatic Skip Driver [Microsoft] ASF Active Streaming Format [Microsoft] + Advanced Systems Format [Microsoft] ASIC Application-Specific Integrated Circuit ASIT Advanced Security and Identification Technology ASL Adaptive Speed Levelling ASLM Apple Shared Library Manager [Macintosh] .ASM Assembler Source Language (file name extension) ASMP Asymmetric Multprocessing ASN Abstract Syntax Notation + Autonomous System Number ASO Automated Systems Operations ASP Active Server Page [Microsoft] + Application/Authorized Service Provider + Aspect Oriented Programming + Association of Shareware Professionals .ASP Active Server Page (file name extension) ASPI Advanced SCSI Programming Interface [Adaptec] ASPS Advanced Signal Processing System ASR Address Space Register + Automatic Send-Receive + Automatic Speech Recognition + Automatic System Recovery ASSP Anti-Spam SMTP Proxy + Application-Specific Standard Product AST AST Research, Inc. (named from first initials of the founders: Albert Wong, Safi Qureshey, Thomas Yuen) AS/U Advanced Server for Unix ASYNC Asynchronous AS/400 Application System/400 [IBM] AT Advanced Technology + Attention ATA Advanced Technology Attachment + Analog Terminal Adapter ATAPI Advanced Technology Attachment Packet Interface ATC Advanced Transfer Cache ATDP Attention Dial Pulse ATDT Attention Dial Tone ATE Automated Test Equipment ATG Advanced Technology Group + All-Terrain Grade [Dell] ATH Attention Hang-Up (Modem command) ATL Active Template Library ATM Adobe Typeface Manager + Air Traffic Management + Asynchronous Transfer Mode + Automated Teller Machine ATPS AppleTalk Printing Services [Macintosh] ATR Automatic Terminal Recognition ATS Administrative Terminal System + Apple Terminal Services AT&T American Telephone and Telegraph ATTN Attention ATTRIB Attribute (also ATR) ATX Advanced Technology Extended [Intel] ATZ Attention Restore configuration profile from nonvolatile RAM (Modem command) .AU Audio (file name extension) AUDIT Automated Data Input Terminal AUI Attachment/Autonomous Unit Interface AUP Acceptable Use Policy [Internet] AUTO Automatic AUTOEXEC Automatic Execution AUX Auxiliary + (First Serial Port) AV Audio/Video + Audio/Visual + Authenticity Verification AVA Audio Visual Authoring [IBM] AVC Audio Visual Connection [IBM] AVD Alternating Voice and Data AVG Average AVI Audio Video Interleave [Microsoft] AVL AVL Tree (named after its founders: Adelson, Veiskii and Landis AVP Attribute-Value Pair AVR Automatic Voice Recognition AVS Advanced Visual Systems AVT Applied Voice Technology AVVID Architecture for Voice Video & Integrated Data [Cisco] AWE Advanced Wave Effects [Creative Lab] AWG American Wire Gage AWK (Unix language named after its authors... Al Aho, Peter Weinberger and Brian Kernighan) AWS Advanced Workstations and Systems (group) [IBM] AWT Abstract Window Toolkit [Java] AX Architecture Extended + Automatic Transmission .BAS Basic Language (file name extension) BASH Bourne Again Shell [Unix] BASIC Beginner's All-purpose Symbolic Instruction Code BASM Built-In Assembler BAT Block Address Translation .BAT Batch Processing (file name extension) B2B Business-To-Business BBS Bulletin Board System B2C Business To Consumer BCC Block Check Character BCC: Blind Carbon Copy BCD Binary Coded Decimal B-CHANNEL Bearer Channel BCL Base Class Libraries + Batch Command Language BCN Beacon BCNF Boyce-Codd Normal Form BCP Best Current Practice + Bulk Copy Program BCPL Basic Computer Programming Language BCR Byte Count Register BCS Bar Code Sorter BDA Bios Data Area BDC Backup Domain Controller BDE Borland Database Engine [Borland] BDLS Bidirectional Loop Switching BDOS Basic Disk Operating System BDR Bus Device Request BDSL (See DSL) BE Below or Equal B2E Business To Employees BECN Backward Explicit Congestion Notification BEDO Burst Extended Data Out BEEP Blocks Extensible Exchange Protocol BEL Bell BELLCORE Bell Communications Research BER Basic Encoding Rules + Bit Error Rate BERT Bit Error Rate Test/Tester BF Bad Flag B/F Background/Foreground .BFC Briefcase (file name extension) [Microsoft] BFF Binary File Format [IBM] BFT Binary File Transfer BFTP Batch FTP BGA Ball Grid Array BGCOLOR Background Color [HTML] BGE Branch if Greater or Equal .BGI Borland Graphic Interface (file name extension) BGP Border Gateway Protocol BGT Branch if Greater Than BHI Branch if Higher BHIS Branch if Higher or Same BHO Browser Helper Object [Spybot] BI Binary Input | TOP | UP to A | DN to C | BOTTOM | .BIB Bibliography (file name extension) BiDi Bi-Directional BA Bell Atlantic (company) Bipolar Field Effect Transistor BACP Bandwidth Allocation Control Protocol BIFET BIFF Binary Interchange File Format BAK Binary Adaptation Kit [Microsoft] BIM Beginning of Information Marker .BAK Backup (file name extension) .BIN Binary (file name extension) BAL Basic Assembly Language BINAC * Binary Automatic Computer BALUN Balanced Unbalanced (device) BIND Berkeley Internet Name Domain BAM Boyan Action Module BINHEX Binary Hexadecimal BAPI Business Application Programming BIOS Basic Input/Output System Interface [SAP] BIS Business Information System BARTS Bell Atlantic Regional Timesharing B... BISDN Broadband Integrated Services Digital Network BIST Built-In Self-Test BiSYNC (See BSYNC) BIT Binary Digit BITNET Because It's Time Network BITNIC Bitnet Network Information Center BIU Bus Interface Unit BIW Business Intelligence Warehouse [SAP] BIX Byte Information Exchange (BBS) .BIZ Businesses (Domain Name) [Internet] .BK! Backup (file name extension) [WordPerfect] .B~K Backup (file name extension) BKSP Backspace BL Backlit + Bit Line BLAS Basic Linear Algebra Subroutines BLAST Bell Labs Layered Space Time + Blocked Asynchronous Transmission (protocol) [Communications Research Group] .BLD BASIC Bload Graphics (file name extension) BLE Branch if Less or Equal BLER Block Error BLI Business Logic Integration [Microsoft] BLK Block BLMC Buried Logic Macrocell BLOB Binary Large Object BLOG Web Log BLOS Branch if Lower Or Same BMI Branch if Minus BMIC BusMaster Interface Controller [Intel] BMP Basic Mapping Support + Basic Multilingual Plane + Batch Message Processing Program .BMP Bitmap (file name extension) [Paintbrush Format] BNC Bayonet Neill-Concelman (connector used with coaxial cable invented by Mr. NeillConcelman) + British Naval Connector BNE Branch if Not Equal BNF Backus-Naur Form (also Backus-Normal Form) [developed by John Backus and Peter Naur] BNS Backbone Network Service BO Binary Output BOA Basic Object Adapter BOB Break-out Box BOC Basic Operator Console BOF Beginning Of File BOM Basic Online Memory [IBM] + Beginning Of Message BOND Bandwidth On Demand BOOTP Bootstrap Protocol [Internet] BOPS Billion Operations Per Second BORPQU Borland Pro Quattro BORQU Borland Quattro BOS Basic Operating System BOT Beginning Of Table + Beginning of Tape + Robot BP Base Pointer BPB BIOS Parameter Block BPDU Bridge Protocol Data Unit Berkeley Packet Filter BPI Bits Per Inch BPL Branch If Plus + Broadband Over Power Lines BPM Business Process Management [Microsoft] BPP Bits Per Pixel BPR Business Process Re-engineering [Linux] BPS Bits Per Second + Bytes Per Second BPSK Binary Phase Shift Keying BR Bad Register BRGC Binary Reflected Gray Code BRI Basic Rate Interface + Brain Response Interface BS Backspace BSAM Basic Sequential Access Method BSC Base Station Controller + Binary Synchronous Communication .BSC Boyan Script (file name extension) [Boyan Communications] BSCS Bachelor of Science (Degree) in Computer Science BSD Berkely Software/Standard Distribution BSF Bit Scan Forward BSI British Standards Institute BSM Basic Storage Module [IBM] BSP Bulk Synchronous Parallelism BSR Bit Scan Reverse BS-RAM Burst Static RAM BSS Block Started by Symbol BST Binary Search Tree BSY Busy BSYNC Binary Synchronous Communications (protocol) BT Bit Test BTAM Basic Telecommunications Access Method [IBM] BTB Branch Target Buffer BTC Bit Test and Complement BTI Business Type Identifier BTOA Binary To ASCII BTP Batch Transfer Program BTR Bit Test and Reset BTS Base Transceiver Station + Bit Test and Set BU Branch Unit BUBL Bulletin Board for Libraries [Janet] BUF Buffer BUS Broadcast and Unknown Server BVH Base Video Handler BWM Block-Write Mode B2X Binary To Hexadecimal [REXX] BYTE Binary Element String C... | TOP | UP to B | DN to D | BOTTOM | C C Programming Language .C C source code (file name extension) [C] CA Certification Authority + Collision Avoidance CAB Compressed Application Binary [Microsoft] .CAB Cabinet (file name extension) [Microsoft] CACLS Command-Line Access Control Lists [Microsoft] CAD Computer Aided Design CADD Computer Aided Design and Drafting CADE Client/server Application Development Environment CAE Client Application Enabler + Common Applications Environment + Computer Aided Engineering CAEN Chemically Assembled Electronic Nanocomputer CAEX Computer Aided Exploration CAG Column Address Generator CAI Computer Aided Instruction CAIRN Collaborative Advanced Interagency Research Network CAL Calendar + Client Access License + Computer Aided Learning CALS Computer-Aided Acquisition in Logistic Support CAM Common Access Method + Computer Aided Manufacturing + Contents Addressable Memory CAN Cancel + Controller Area Network CANBUS Conroller Area Network Bus CAP Carrierless Amplitude and PhaseModulation + Central Arbitration Point + Communication Application Platform + Competitive Access Provider + Computer Aided Publishing .CAP Capture (file name extension) CAPD Computing To Assist Persons With Disabilities [Johns Hopkins University] CAPE Concurrent Art-to-Product Environment CAPS Capitals (Upper Case Letters) + Cassette Programming System CAPTCHA Completely Automatic Public Turing Test To Tell Computers and Humans Apart CAR Committed Access Rate [Cisco] CARL Colorado Alliance of Research Libraries [Internet] CART Computer-Assisted Radar Tomography CAS Column Address Select/Strobe + Communications Application Specification + Computer Aided Styling CASE Computer Aided Software Engineering CASL Crosstalk Application Scripting Language [DCA] CASS Computer Assisted Search Service CASSIS Classified and Search Support Information System CAT Computer Adaptive Test + Computer Aided Testing + Computer Aided Tomography + Computer Aided Transcription + Concatenate .CAT Catalog (file name extension) CATS Computer Assisted Training System CAT5E (Cat 5e) Category 5e (cables) CAT SCAN Computerized Axial Tomography Scan CATV Community Antenna Television (this was the original name for what is now known as Cable TV) CAU Controlled Access Unit CAV Constant Angular Velocity CAVE Computer Automatic Virtual Environment CBC Cipher Block Chaining CBCR Channel Byte Count Register CBDS Connectionless Broadband Data Service CBEMA Computer and Business Equipment Manufacturers Association CBGA Ceramic Ball Grid Array CBI Computer Based Instruction\Instrumentation CBL Computer Based Learning .CBL COBOL source code (file name extension) CBMS Computer-Based Mail System CBN Community Based Networks CBR Case Based Reasoning + Constant Bit Rate CBT Computer Based Training CBW Convert Byte to Word CBX Computer-Controlled Branch Exchange CC Cluster Controller CC: Carbon Copy CCD Charged-Coupled Device CCFT Cold Cathode Fluorescent Tube CCI Common Client Interface + Copy Control Information CCIE Cisco Certified Internetwork Expert [Cisco] CCITT Comite Consultatif International Telegraphique et Telephonique/ Consultative Committee for International Telegraph and Telephone CCL Connection/Cursor Control Language CCM Corba Component Mode + Crystal Configuration Manager [Microsoft] CCNA Cisco Certified Network Associate CCNP Cisco Certified Network Professional CCP Certified Computing Professional + Console Command Processor CC/PP Composite Capabilities/Preference Profile CCS Common Command Set + Common Communications Services + Common Communications Support + Continuous Composite Servo + Cryptographic Checksum .CCS Color Calibration System (file name extension) CCSIS Coded Character Set ID CCSD Cellular Circuit-Switched Data CCTLD Country Code Top-Level Domain CD Carrier Detect + Change Directory + Collision Detection + Color Display + Compact Disk C/D Control Data C2D Character To Decimal [REXX] CDA Compound Document Architecture [DEC] .CDA CD Audio-Track (file name extension) CDBT Compact Disk-Based Training CDC Connected Device Configuration + Control Data Corporation CD_CHRDY Card Channel Ready [IBM] CD-DA Compact Disk - Digital Audio CDDI Copper Distributed Data Interface CDE Common Desktop Environment + Complex Data Entry CD-E Compact Disk - Erasable CDF Channel Definition Format .CDF Comma Delimited Format (file name extension) CDFS Compact Disc File System [Microsoft] CD+G Compact Disk plus Graphics CD-I Compact Disk - Interactive CDIA Certified Document Imaging Architect CDL Computer Design Language CDMA Code Division Multiple Access CDMF Commercial Data Masking Facility [IBM] CD-MO Compact Disk - Magneto Optical CDO Collaboration Data Objects [Microsoft] CDOS Concurrent Disk Operating System CDP * Certificate In Data Processing (First certification for Computer Professionals) CDPD Cellular Digital Packet Data CDR Call Detail Record + Call Detail Recording + Common Data Representation .CDR CorelDRAW (file name extension) [Corel] CD-R Compact Disk - Recordable CD-RAM Cached RAM CD-RDX Compact Disk - Read Only Memory Data Exchange Standard CDRL Contract Data Requirements List CD-ROM Compact Disk - Read Only Memory CD-ROM-XA CD-ROM Extended Architecture CD-RTOS Compact Disk - Real Time Operating System CD-RW Compact Disk - Rewritable CDS Current Directory Structure CDSA Common Data Security Architecture CDSL (See DSL) .CDT Corel Draw Template (file name extension) CD-V Compact Disk - Video CD-WO Compact Disk - Write Once .CDX Compound Index (file name extension) [Fox Pro] CD-XA Compact Disk - Extended Architecture CE Cache Enable + Chip Enable + Collision Elimination + Consumer Elecronics + Convert Enable CEB Conditional End Bracket CEC Certified E-Commerce Consultant CEG Continuous Edge Graphics CEI Conducted Electromagnetic Interference CELP Card Edge Low Profile (socket) [Intel] CEMS Constituent Electronic Mail System CEOP Conditional End Of Page CER Canonical Encoding Rules CERN The European Particle Physics Laboratory (initials originally from Conseil Europeen pour la Recherche Nucleaire) CERT Computer Emergency Response Team CFB Cipher Feedback + Configurable Function Block CF Compact Flash (camera) .CFG Configuration (file name extension) CFM Code Fragment Manager [Macintosh] + Cubic Feet Per Minute CFML ColdFusion Markup Language CFP Call For Proposal CFR Computerized Facial Recognition CFS Caching/Common File System CFV Call For Votes [Bitnet] CG Control Gate CGA Color Graphics Adapter CGE Common Graphics Environment CGI Computer Generated Images + Computer Graphics Interface CGI-BIN Common Gateway Interface - Binary .CGM Computer Graphics Metafile (file name extension) + Graph (file name extension) [Lotus 12-3] [LDC] CGMS Copy Generation Management System CGS Continuous-Grain Silicon CHAP Challenge-Handshake Authentication Protocol CHAR Character CHAT Conversational Hypertext Access Technology [Internet] CHCK Channel Check CHCP Change Code Page CHDIR Change Directory CHFN Change Finger [Unix] CHGRP Change Group CHIPS Clearinghouse Interbank Payments System .CHK CHKDSK (file name extension) CHKDSK Check Disk CHMOD Change Mode CHOWN Change Owner CHP Chapter CHR Character CHRP Common Hardware Reference Platform CHS Cylinder Head Sector CHTML Compact/Compressed HTML CI Component Interface CIA Current Instruction Address CIAC Computer Incident Advisory Capability CICS/VS Customer Information Control System/ Virtual Storage [IBM] CID Charge-Injection Device + Configuration/Installation/Distributi on CIDR Classless Inter-Domain Routing CIF Common Interchange/Intermediate Format + Crystallographic Information File + Customer Information Feed CIFS Common Internet File System CIL Common Intermediate Language [ECMA] CIM Common Information Model + CompuServe Information Manager + Computer Integrated Manufacturing CIO Chief Information Officer CIOCS Communication Input/Output Control System CIP Command Interface Port + Common Indexing Protocol CIR Committed Information Rate CIRC Circular Reference + Cross-Interleaved Reed-Solomon Code CIS Card Information Structure + Client Information System + CompuServe Information Service + Computer Information Systems + Contact Image Sensor + Customer Information System CISC Complex Instruction Set Computing CIT Computer-Integrated Telephony CIVR Response CIW CIX CJLI CKD CLAR CLASS + Computer and Interactive Voice Certified Internet Webmaster Commercial Internet Exchange + Compulink Information Exchange Command Job Language Interpreter Count Key Data (device) Channel Local Address Register Client Access to Systems and Services Cooperative Library Agency for Systems and Services + Custom Local-Area Signaling Services CLC Clear Carry Flag CLD Clear Direction Flag CLDC Connected Limited Device Configuration CLEC Competitive Local Exchange Carrier CLI Call-Level Interface + Clear Interrupt Flag + Client Library Interface + Command Line Interface + Common Language Infrastructure/Interface CLIB C Library CLID Calling Line Identification CLIST Command List CLK Clock CLNP Connectionless Network Protocol CLOS Common Lisp Object System CLP Cell Loss Priority + Constraint Logic Programming .CLP Clipboard (file name extension) [Microsoft] CLR Common Language Runtime [Microsoft] CLS Clear Screen + Common Language Support CLSID Class Identifier CLTP Connectionless Transport Protocol CLTS Clear Task Switch Flag CLTV Constant Linear Time Velocity CLUI Command Line User Interface CLUT Color Look-Up Table CLV Constant Linear Velocity CM Centimeter + Control Mark + Corrective Maintenance CMA Concert Multi-thread Architecture CMAK Connection Manager Administration Kit [Microsoft] CMC Common Mail Calls + Common Messaging Calls + Communication Management Configuration + Complement Carry Flag + Computer-Mediated Communication [Internet] CMD Circuit Mode Data .CMD Command (file name extension) CMF Creative Music Format CNIDR Clearinghouse for Network Information and Discovery and Retrieval [Internet] CMIP Common Management Information Protocol CMIS Common Management Information Services/System CML Chemical Markup Language + Conceptual Modelling Language + Computer Managed Learning + Current Mode Logic CMM Capability Maturity Model CMMS Computerized Maintenance Management Software CMMU Cache/Memory Management Unit [Motorola] CMOS Coats-Mellon Operational Specification + Complementary Metal-Oxide Semiconductor CMOV Conditional Move CMP Compare + Computer CMPS Compare Word String CMS Call Management Server + Code Management System + Compiler Monitor System + Content Management System + Conversation Monitor System CMTS Cable Modem Termination System CMVC Configuration Management Version Control [IBM] CMW Compartmented Mode Workstation CMY Cyan-Magenta-Yellow (color model) CMYK Cyan-Magenta-Yellow-Black (color model) CNA Certified NetWare/Network Administrator CNAPS Co-Processing Node Architecture for Parallel Systems CNC Computerized Numerical Control CNE Certified NetWare Engineer .CNF Configuration (file name extension) CNG Calling (tone) CNI Certified Novell Instructor [Novell] CNIDR Clearinghouse for Networked Information and Discovery and Retrieval [Internet] CNN Composite Network Node CNR Carrier to Noise Ratio + Communication Network Riser CNSS Core Nodal Switching Subsystem [Internet] CNT Carbon Nanotube .CNT Contents (file name extension) CNV Conventional (pertaining to Memory) CNVT Convert CNX Certified Network Expert CO Central Office + Command Output + Convert Out COAST Card On A Stick (module) COAX Coaxial Cable COB Chip-On-Board .COB COBOL source code (file name extension) COBOL Common Business-oriented Language (See HLL) .COD Code List (file name extension) CODASYL * Conference on Data System Languages (Group that designed COBOL) CODE Client-Server Open Development Environment CODEC Coder/Decoder + Compression/Decompression COE Common Operating Environment COEM Commercial Original Equipment Manufacturer COFF Common Object File Format [Unix] COGO Coordinate Geometry (Programming Language) COL Collision + Computer Oriented Language COLD COLL COM Computer Output to Laser Disk Collision Component Object Model [Microsoft] + Computer Output Microfilm .COM Command (file name extension) + Commercial Business (Domain Name) [Internet] COM1 First serial Port (asynchronous port) COM2 Second serial Port COM3 Third serial Port COM4 Fourth serial Port COMDEX Computer Dealers Exposition COMET Cornell Macintosh Terminal Emulator COMM Communications COMMAT In Morse Code (.--.-.)(dot dash dash dot dash dot), name of the sign to denote the Commercial At symbol "@". (Adopted by the ITU in December 2003) COMP Compare COMP. Computers [USENET Newsgroup Category] COMSAT Communications Satellite Corporation CON Console (includes Keyboard and Screen) COND Condition CONFIG Configuration CONS Connection-Oriented Network Service CONTONE Continuous Tone .COOP Cooperatives-Business (Domain Name) [Internet] COPICS Communications Oriented Production Information and Control System [IBM] COR Common Object Runtime CORBA Common Object Request Broker Architecture COREN Corporation for Research and Enterprise Network COS Compatible Operating System + Customer Order Specification [Kodak/Fuji] COSE Combined Office Standard Environment + Common Open Software/Systems Environment COSMIC Computer Software Management and Information Center [NASA] COSMOS Computer System for Mainframe Operations COSS Common Object Services Specification COTS Commercial Off-The-Shelf (software) CP Copy Protected CPA Certified Public Accountant + Cost Per Action CPAN Comprehensive Perl Archive Network CPC Constant Point Calculation + Cost Per Click CPCS Check Processing Control System [IBM] CPE Central Processing Element + Customer Premises Equipment + Customer Provided Equipment .CPE Cover Page (file name extension) CPFR Collaborative Planning, Forecasting and Replenishment CPG Clock Pulse Generator CPI Characters Per Inch + Clock Per Instruction + Common Programming Interface [IBM] .CPI Code Page Information (file name extension) [MS-DOS] CPI-C Common Programming Interface for Communications [IBM] CPIO Copy In and Out [Unix] CPL Current Privilege Level .CPL Control Panel (file name extension) CPLD Complex Programmable Logic Device CPM Critical Path Method + Cryptography Provider Manager CP/M Control Program for Microcomputers [Digital Research] CPO Chief Privacy Officer CPRM Content Protection for Recordable Media CPS Certification Practice Statement + Characters Per Second + Cycles Per Second CPT Command Pass Through CPU Central Processing Unit CPW Commercial Processing Workload [IBM] CR Carriage Return CRAM Challenge-Response Authentication Mechanism + Cyberspatial Reality Advancement Movement CRAYON Create Your Own Newspaper CRC Cyclic Redundancy Check .CRD Cardfile (file name extension) + Chord (music file name extension) CREN Computer Research Education Network + Corporation for Research and Education Networking CRF Cable Retransmission Facility + Cross Reference File CRI Color Reproduction Indices CRISM Compact Reconnaissance Imaging Spectrometer for Mars CRISP C Reduced Instruction Set Processor [AT&T Bell Labs] CRL Certificate Revocation List CR/LF Carriage Return/Line Feed CRM Customer Relationship Management CROM Control Read Only Memory CRT Cathode Ray Tube CRTC CRT Controller CRUD Create, Retrieve, Update, Delete CS Chip Select + Clear to Send + Code Segment C/S Client/Server CSA Calendaring and Scheduling API [IBM] CSAR Channel System Address Register CSCW Computer Supported Cooperative Work CSD Circuit-Switched Data + Computer Services Department + Corrective Service Diskette [IBM] CSDS Circuit Switched Data Service CSE Certified System Engineer CSFI Communication Subsystem For Interconnection CSG Constructive Solid Geometry + Consulting Services Group [Lotus] CSI Code Sequence Identification + Command Sequence Introducer + CompuServe Incorporated CSID Called Subscriber Identification CSL Computer Sensitive Language CSLIP Compressed Serial Line Interface Protocol [Internet] CSM Code Set Map (file) + Communications Services Manager + Control Strip Module [Macintosh] CSMA/CA Carrier Sense Multiple Access/with Collision Avoidance CSMA/CD Carrier Sense Multiple Access/with Collision Detection CSMS Customer Support Management System CSN Card-Select Number CSNET Computer Science Network CSO Central Services Organization CSP Certified Systems Professional + Chip-Scale Packaging + Commercial Service Provider + Commercial Subroutine Package + CompuCom Speed Protocol [CompuCom] + Communicating Sequential Processes + Cross System Product [IBM] CSPDN Circuit Switched Public Data Network CSRAM Custom Static RAM CSS * Continuous System Simulator (Language) CSS Cascading Style Sheet [Microsoft] + Contact Start-Stop + Content Scrambling System CSSM Client-Server Systems Management [IBM] CS/SS Card Service/Socket Service CSTA Computer-Supported Telephony Applications CSU Channel Service/Switching Unit CSV Circuit-Switched Voice + Comma-Separated Value/Variable + Common Services Verbs (interface) [Microsoft] C2T Cable Changing Technology C&T Chips and Technologies CTB Cipher Type Byte CTC Channel To Channel + Counter/Timer Chip CTCP Client-To-Client Protocol CTI Computer-Telephony Integration CTL Complex Text Layout CTOS Cassette Tape Operating System + Computerized Tomography Operating System + Convergent Technologies Operating System CTP Community Technology Preview [Microsoft] CTPA Coax-to-Twisted-Pair Adapter CTRCO * Calculating,Tabulating,Recording Company (The name of this company was changed to "International Business Machines" by Thomas J. Watson, Sr.) CTRL Control CTS Clear To Send + Computer Telephony Solution [IBM] + Customer Telephone System CTSS * Compatible Time Sharing System CUA Common User Access [IBM] CUB Cursor Backward CUD Cursor Down CUE Custom Updates and Extras (card) [Egghead Software] CUF Cursor Forward CUI Character-Oriented User Interface + Common User Interface [IBM] CUP Cursor Position CUPID Completely Universal Processor I/O Design [AST] .CUR Cursor (file name extension) CUSIP Committee for Uniform Security Identification Procedures [U.S. Treasury] CUT Control Unit Terminal CUTE Clarkston University Terminal Emulator CUU Cursor Up CVE Common Vulnerabilities and Exposures [US-CERT] CVF Compressed Volume File CVGA Color Video Graphics Array CVIA Computer Virus Industry Association .CVR Cover Page (file name extension) CVS Computer Vision Syndrome + Concurrent Versions System CVT Convert CVW CodeView for Windows CWA Competitive Web Analysis CWD Convert Word to Double Word + Change Working Directory [Internet] CWIS Campus Wide Information Service/System [Internet] + Community Wide Information Service/System [Internet] C2X Character To Hexadecimal [REXX] CXML Commerce Extensible Markup Language CYL Cylinder CYMK Cyan-Yellow-Magenta-Black (color model) D... | TOP | UP to C | DN to E | BOTTOM | D/A DAA Digital to Analog Data Access Arrangement + Decimal Adjust for Addition DAB Digital Audio Broadcasting DAC Data Acquisition and Control + Device Access Code + Digital to Analog Converter + Dual Attachment Concentrator DACL Discretionary Access Control List DACTLU Deactive Logical Unit DAD Desktop Application Director [Borland] DAE Digital Audio Extraction DAF Destination Address Field DAI Distributed Artificial Intelligence DAL Data Access Language [Apple Computer] + Data Access Layer + Disk Access Lockout DAM Data Acquisition and Monitoring DAMA Demand Assigned Multiple Access DAMPS Digital AMPS DAO Data Access Object [Microsoft] + Disk At Once DAP Data/Directory Access Protocol + Developer Assistance Program + Dynamic Application Partitioning [IBM] DAPIE Developers Application Programming Interface Extensions DARI Database Application Remote Interface [IBM] Control Interface DARMS Digital Alternate Realization of DCIM Duscrete Complex Image Method Musical Symbols DCL Data Control Language + Declaration + DART Digital Audio Reconstruction DEC Command Language [DEC] + Technology Device Clear + Digital Control Logic DAS Decimal Adjust for Subtraction + + Dual-Attached Station Digital Command Language [Digital] DASD Direct Access Storage Device [IBM] DCML Dynamic Configuration Markup Language DAT Digital Audio Tape + Disk Array DCOM Distributed Component Object Model Technology DCP Device Control Protocol + .DAT Data (file name extension) Digital Light Processing [TI] DATACOM Data Communications DCS Data Collection System + Data Control DAV Digital Audio-Video + System + Distributed Authoring and Versioning Desktop Color Separation + DAVIC Digital Audio-Visual Council Distributed Control System dB Decibel DCT Discrete Cosine Transform DB Data Base + Data Buffer + Device Bay .DCT Dictionary (file name extension) dBA Adjusted Decibel DCU Data-Cache Unit .dba Date Book Archive (file name DD Day + Digital Display + Double extension) [Palm] Density DBBS Dynamic Bass Boot System DDA Distributed Data Access + DomainDBC Device Bay Controller Defined Attribute DBCS Delivery Bar Code Sorter + DoubleDDB Device Dependent Bitmap + Device Byte Character Set Descriptor Block .DBF Database Format (file name extension) DDC Digital Data Channel [VESA] + Display DBIS Dun & Bradstreet Information Services Data Channel .DBK Docbook (format) (file name DDCMP Digital Data Communications Message extension) Protocol [DEC] dBm Decibels to a Milliwatt DDC1 Display Data Channel One DBM Data Base Manager DDCS Distributed Database Connection DBMS Data Base Management System Services [IBM] DBR DOS Boot Record DDD Direct Distance Dialing DBS Data Base Server + DDE Direct Data Entry + Dynamic Data Direct (to home) Broadcast Exchange [Microsoft] (satellite) System DDEML Dynamic Data Exchange Manager Library DBV Digital Broadcast Video [Microsoft] DBWR Database Writer [Oracle] DDF Display Data Channel + Dynamic Data DB2 Database 2 Formatting [IBM] DC Data Collection + Data Communication DDI Device Driver Interface + + Data Control + Digital Document Interchange + Direct Device Control + Direct Current Dial In D2C Decimal To Character [REXX] DDK Device Driver Kit [Microsoft Windows] DCA Digital Communications Associates + DDL Data Definition Language + Data Document Content Architecture [IBM] Description Language DCAF Distributed Console Access Facility DDM Distributed Data Management [IBM] DDN Defense Data Network DCAM Digital Camera + Direct Chip Attach DDNS Dynamic Domain Naming System Module DDOS Distributed Denial Of Service DCB Device Control Block + Disk DDP Datagram Delivery Protocol + Coprocessor Board [Novell] Distributed Data Processing DCC Data Country Code + Digital Command DDR Dynamic Document Review [Symantec] Control + DDR-SDRAM Double Data Rate-SDRAM Digital Compact Cassette + Direct DDS Data Description Specification + Cable/Client Connection Digital Dataphone Service [AT&T] + + Display Combination Code Design Data Sheet + DCD Data Carrier Detect Digital Data Storage + Direct Digital DCE Data Circuit-Terminating Equipment + Synthesis + Data Communications Equipment + Distributed Database Services Distributed Computing Environment DDX Digital Data Exchange [OSF] + DE Device End Distributed Computing Equipment DEA Data Encryption Algorithm + DCED Distributed Computing Environment Disposable Email Address Daemon DEC Decrement + Device Clear + Digital DCF Data Communication Facility [IBM] + Equipment Corporation Data Compression Facility + DECNET Digital Equipment Corporation Data Count Field [IBM] + Networking (protocol) Design Rule for Camera File Systems + DEF Desktop Functional Equivalent Driver Configuration File [Lotus] [Compaq] D-CHANNEL Data Channel .DEF Definitions + Defaults (file name DCI Digital Camera Images + Display extensions) DEFRAG DEK DEL DELSTR .DEM DEN Association + Direct Inward System Access DISP Displacement (offset) DIST Digital Image Scaling Technology DIT Directory Information Tree DIV Divide DIVE Direct Interface Video Extension Xerox] [OS/2 Warp] DEP Data Execution Protection [Microsoft] DIVX Digital Video Express DER Distinguished Encoding Rules DIW D-Inside Wire [AT&T] DES Data Encryption Standard + Data Entry DIX Digital-Intel-Xerox (Original Sheet Ethernet Standard) .DES Description (file name extension) .DIZ Description In Zip (file name DET Device Execute Trigger extension) DEV Device DL Download (also D/L) DF Data Field + Default + Destination DL/1 Data Manipulation Language 1 [IBM] Field + DLB Dynamic Load Balancing Device Flag + Double Flag DLC Data Link Control (protocol) [IBM] + DFC Data Flow Control Distributed Loop Carrier DFD Data Flow Diagram DLCI Data Link Connection Identifier DFDR Digital Flight Data Recorder DLD Display List Driver DFM Design For Manufacturability [IBM] DLE Data Link Escape DFP Digital Flat Panel DLL Dynamic Link Library DFS Distributed File System DLM Distributed Lock Manager + Dynamic DFSMS Data Facility Storage Management Link Module Subsystem [IBM] DLP Digital Light Processing DFT Design For Testability + Diagnostic DLPI Data Link Provider Interface Function Test + DLR DOS LAN Requester Discrete Fourier Transform + DLS Data Link Switching [IBM] + Distributed Function Terminal Downloadable Sounds DFU Data File Utility DLT Digital Linear Tape DGIS Direct Graphics Interface Standard DM Distributed Memory DHCP Dynamic Host Configuration Protocol DMA Direct Memory Access/Addressing + DHL Dynamic Head Loading Document Management Alliance .DHP Dr. Halo PIC (file name extension) DMAC DMA Controller DHTML Dynamic HTML DMACS Distributed Manufacturing Automation DI Data In + Destination Index & Control Software DIA Document Interchange Architecture DMD Digital Micromirror Device [TI] [IBM] DME Direct Memory Execution + DIAD Delivery Information Acquisition Distributed Management Environment Device [UPS] DMF Distribution Media Format [Microsoft] DIB Device Independent Bitmap + DMI Desktop Management Interface Directory Information Base + DML Data Manipulation Language + Dual Independent Bus [Intel] Dialog Markup Language [W3C] DIBOL DEC Business Oriented Language DMM Digital Multimeter .DIC Dictionary (file name extension) DMMS Dynamic Memory Management System DICOM Digital Imaging and Communications in DMOS Double-diffused Metal-Oxide Medicine Semiconductor DID Direct Inward Dialing DMP Dot Matrix Printer DIDS Distributed Intrusion Detection DMPC Distributed Memory Parallel Computer System DMPP Distributed Memory Parallel Processor DIF Data Interchange Format DMQS Display Mode Query and Set [IBM] DIFFSENS Differential Sense DMS Data Management Software + DIIP Direct Interrupt Identification Port Data/Document DILA Direct-Drive Image Light Amplifier Management System DIME Direct Internet Message Encapsulation DMSD Digital Multistandard Decoding DIMM Dual In-Line Memory Module DMSDK Digital Media Software Development DIN Deutsche Industrie Norm (German Kit [SGI] equivalent of EIA) DMSS Distributed Mass Storage System DIO Data Input-Output DMT Digital/Discrete Multi-Tone DIP Dialup Internet Protocol [Internet] + DMTF Desktop Management Task Force Digital Imaging Processing + DMY Day Month Year Dual In-line Package + Dual In-line DMZ Demilitarized Zone Pin DN Down DIR Directory (file) DNA Deoxyribonucleic Acid DIS Distributed Interactive Simulation + DNC Direct Numerical Control Draft International Standard + DNIC Data Network Identification Code Dynamic Impedance Stabilization DNIE Digital Natural Image Engine [CompuCom] DNIS Dialed Number Identification Service DISA Data Interchange Standards DNS Domain Naming System Defragment Data Encryption Key Delete Delete String [REXX] Demonstration (file name extension) Directory Enabled Network + Document Enabled Networking [Novell- DO Data Out + Distributed Objects DRO Data Request Output + Destructive DOA Dead On Arrival Read-Out .DOC Document + Documentation (file name DRS Document Registration System extensions) .DRS Driver Resource (file name extension) DOCSIS Data Over Cable-Service Interface [WordPerfect] Specification DRV Drive DOCSV Data Over Circuit-Switched Voice .DRV Device Driver (file name extension) DOE Distributed Objects (Also see .DVR) Environment/Everywhere .DRW Draw + Drawing (file name extensions) DOIP Dial Other Internet Providers [IBM] DS Data Segment + Data Send + Data DO-IT Disabilities, Opportunities, Server + Double Sided Internetworking and D/S Dhrystone Per Second Technology DS3 Digital Signal Level 3 DOLAP Desktop OLAP DSA Digital Signature Algorithm + DOM Document Object Model [W3C] Directory System Agent DOMF Distributed Object Management DSAP Destination Service Access Point Facility DSD Direct Stream Digital [Sony-Philips] DOS Denial Of Service + Disk Operating DSDD Double Sided, Double Density System (diskette) DOSEM DOS Emulation DSE Data Storage Equipment .DOT Document Template (file name DSEA Display Station Emulation Adapter extension) DSECT Dummy Control Section DOV Data Over Voice DSHD Double Sided, High Density (diskette) DOW Day Of Week DSIG Digital Signature DP Data Processing + Dot Pitch DSIS Distributed Support Information DPA Demand Protocol Architecture [3Com] + Standard Document Printing Architecture DSL Digital Subscriber Line DPAM Demand Priority Access Method ADSL Asymmetric DSL DPAREN Data Parity Enable [IBM] BDSL Broadband DSL DPB Drive Parameter Block CDSL Consumer DSL [Rockwell] DPC Direct Program Control FDSL Fixed Directory DPI Distributed Protocol Interface + Dots Subscriber List Per Inch HDSL High-Bit-Rate DSL + DPL Dedicated Public License + High-Data-Rate DSL Descriptor Privilege Level IDSL Integrated Services DPM Digital Panel Meter Digital Network DSL DPMA Data Processing Management RDSL Rate-Adaptive DSL Association SDSL Single-Line DSL + DPMI DOS Protected Mode Interface Symmetric DSL [Microsoft] VDSL Very-High-Bit-Rate DSL DPMS Digital Power Management Signaling + VADSL Very-High-Rate Display Power Management Support Asymmetric DSL DPO Data Phase Optimization VDSL Very-High-Data-Rate DSL DPOF Digital Print Order Format DSL Domain Specific Language + Dynamic DPS Document Processing System Simulation Language DPSK Differential Phase Shift Keying DSLAM Digital Subscriber Line Access DPtoTP Display Coordinates to Tablet Multiplexer Coordinates D-SLR Digital Single Lens Reflex (camera) (converting) DSM Distributed Shared Memory + DQDB Distributed Queue Dual Bus Domain-Specific Modeling DQL Data Query Language DSMA Digital Sense Multiple Access DR Data Received DSML Directory Services Markup Language D/R Direct or Reverse DSN Data Source Name + Delivery Service DRAM Dynamic Random Access Memory Notification DRAW Direct Read After Write DSO Dynamic Shared Object DR.BOND Dial-up Router Bandwidth On Demand DSOM Distributed System Object Model [NEC] DSP Delivery Service Partner + DRCMF Digital Reality Creation Multi Digital Signal Processing/Processor + Function [Sony] Digital Sound Processor + DRDA Distributed Relational Database Directory Synchronization Protocol Algorithm/Architecture [IBM] [Lotus] DR-DOS Digital Research-Disk Operating DSPT Display Station Pass-Thru [IBM] System DSQD Double Sided, Quad Density (diskette) DRDW Direct Read During Write DSR Data Set Ready + Device Status DRE Direct Recording Electronic (voting Register + systems) Device Status Report DRI Declarative Referential Integrity + DSS Decision Support System + Digital Digital Research Incorporated Signature Standard + DRM Digital Rights/Distributed Resource Digital Spread Spectrum + Direct Management Station Selector DSSA Domain Specific Software Architecture DSSI Digital Standard Systems Interconnect [DEC] DSSS Direct-Sequencing Spread Spectrum DSSSL Document Style Semantics and Specifications Language DSTN Double Supertwisted Nematic DSU Data Service/Switching Unit + Digital Service Unit DSVD Digital Simultaneous Voice and Data DSW Data Status Word + Device Status Word DSX Digital Signals Cross-Connect D2T2 Dye Diffusion Thermal Transfer (printing) DTA Digital Terminal Adapter + Disk Transfer Area .DTA Data (file name extension) DTC Desktop Conferencing DTCP Digital Transmission Copy Protection [Hitachi, Intel, Panasonic, Sony, Toshiba] DTD Document Type Definition DTE Data Terminal Equipment + Dumb Terminal Emulator DTF Distributed Test Facility DTL Dialogue Tag Language [IBM] + DiodeTransistor Logic DTM Digital Terrain Mapping DTMF Data Tone Multiple Frequency + Dual Tone Multifrequency DTP Desktop Publishing + Distributed Transaction Process DTR Data Terminal Ready + Data Transfer Rate DTS Digital Theatre Systems + Digital Transceiving System Distributed Traffic Shaping [Cisco] DTSS Dartmouth Time Sharing System DTV Desktop Video + Digital Television DTVC Desktop Video Conferencing DU Disk Usage DUA Directory User Agent DUAT Direct User Access Terminal DUN Dial-Up Networking [Microsoft] DUNCE Dial Up Network Connection Enhancement DV Digital Video .DV DESQview Script (file name extension) DVC Desktop Video Conferencing + Digital Video Camera + Digital Video Cassette + Dual Voice Coil DVD Digital Video Disk DVD-A Digital Video Disk-Audio DVD-AR Digital Video Disk-Audio Recording DVD-R Digital Video Disk-Recordable DVD-RAM Digital Versatile Disc-RAM DVD-ROM Digital Versatile Disc-ROM DVD-SR Digital Video Disk-Stream Recording DVD-VR Digital Video Disk-Video Recording DVE Digital Video Effect DVI Digital Video Interactive + Digital Visual Interface .DVI Device Independent (file name extension) DVM Digital Video Manager + Digital Volt Meter DVMRP Distance Vector Multicast Routing Protocol [Internet] DVOF Digital Video Over Fiber DVR Digital Video/Voice Recorder .DVR Device Driver (file name extension) (Also see .DRV) DW Data Warehousing DWDM Dense Wavelength Division Multiplexer DWG Drawing DWMT Discrete Wavelet Multitone DWT Discrete Wavelet Transform D2X Decimal To Hexadecimal [REXX] .DXB Drawing Interchange Binary (file name extension) [AutoCAD] DXC Data Exchange Control DXF Data Exchange File + Drawing Exchange Format DXI Data Exchange Interface DYNSLT Dynamic Select [IBM] DYNSRC Dynamic Source E... | TOP | UP to D | DN to F | BOTTOM | EA Effective Address + Extended Attribute [OS/2] EAI Enterprise Application Integration EAP Extensible Authentification Protocol EAR Enterprise Archive + External Access Register EARN European Academic Research Network EAROM Electrically Alterable Read Only Memory EARS Electronic Access to Reference Services + Electronic Authoring and Routing System [DEC] + Explicit Archive and Retrieval System [Langley Research] EATA Enhanced AT Bus Attachment EAX Environmental Audio Extensions [Creative] EB Exabyte (1,024 petabytes) (One Billion Billion characters of information) EBASIC Extended BASIC EBC EISA Bus Controller EBCT Electron Beam Computed Tomography EBCDIC Extended Binary Coded Decimal Interchange Code [IBM] EBI Equivalent Background Input + Extended Background Investigation EBNF Extended Backus-Naur Form EBOOK Electronic Book EBPP Electric Bill Presentment and Payment EBR Extended Boot Record EBS Event-Based Sampling EBT Electronic Benefits Transfer EBXM Electronic Business XML EC Electronic Commerce + Error Control ECAL Enjoy Computing And Learn ECAT Electronic Card Assembly and Test [IBM] ECB Electronic Codebook + Event Control Block ECC Elliptic Curve Crypto + Error Check Code + Error Checking and Correction + Error Correction Code ECD Enhanced Color Display + Enhanced Compact Disk ECDL European Computer Driving Licence ECHO European Commission Host Organization [Internet] ECI External Call Interface ECL Emitter Coupled Logic ECM Electronic Control Module ECMA European Computer Manufacturers Association ECN Electronic Communications Network ECNE Enterprise Certified NetWare Engineer [Novell] ECP Enhanced/Extended Capabilities Port [Microsoft] ECS Enhanced Chip Set ECTL Electronic Communal Temporal Lobe ECU EISA Configuration Utility ED Erase Display EDA Electronic Design Automation + Embedded Document Architecture [Go Corporation] EDB Embedded Database EDC Electronic Digital Computer + Enhanced Data Correction + Error Detection and Correction EDDC Extended Distance Data Cable EDE Encrypt-Decrypt-Encrypt EDG Electronic Program Guide EDGAR Electronic Data Gathering, Analysis and Retrieval EDGE Enhanced Data-Rates for Global Evolution EDI Electronic Data Interchange + Electronic Document Interchange [DEC] EDIF Electronic Design Interchange Format EDIFACT EDI for Administration Commerce and Transport EDL Edit Decision List EDLC Ethernet Data Link Control EDLIN Editor (Line Text) EDMS Electronic Document Management System EDO Extended Data Out EDOS Enhanced DOS for Windows EDP Electronic Data Processing EDPM Electronic Data Processing Machine EDR Enhanced Data Rate EDRAM Enhanced/Eraseable/Extended Dynamic Random Access Memory EDS Electronic Data Systems (corporation) EDSAC * Electronic Delay Storage Automatic Calculator EDTV Enhanced Definition Television .EDU Educational Institutions (Domain Name) [Internet] EDVAC * Electronic Discrete Variable Automatic Computer (First stored-program digital computer) EE Extended Edition [IBM] EEC Extended Error Correction EEDID Enhanced-Extended Display Identification Data EEG Electroencephalogram EEL Epsilon Extension Language EEM Extended Memory Management EEMAC Electrical & Electronic Manufacturers of Canada EEMS Enhanced Expanded Memory Specification EEPI Electronic Entertainment Policy Initiative EEPROM Electrically Erasable Programmable Read-Only Memory EES Escrow Encryption Standard EFA Extended File Attribute EFF Electronic Frontier Foundation EFI Electromechanical Frequency Interference + Electronics For Imaging + Extensible Firmware Interface EFIGS English, French, Italian, German, Spanish EFL Emitter Follower Logic E-FORM Electronic Form EFS Encrypting File System EFTS Electronic Funds Transfer System EGA Enhanced Graphics Adapter EGP Exterior Gateway Protocol EGREP Extended Global Regular Expression Print [Unix] EHCI Enhanced Host Controller Interface EHLLAPI Emulator High Level Language Application Programming Interface [IBM] EIA Electronic Industries Association EICAS Engine Indicating and Crew Alerting System EIDE Enhanced Integrated Drive Electronics EIM Electronic Image Management EIS Enterprise/Executive Information System EISA Extended Industry Standard Architecture EJB Enterprise JavaBeans EL Electroluminescent (display) + Erase Line ELAN Emulated Local Area Network ELC Embedded Linking and Control ELD Electronic License Distribution ELEC Enterprise Local Exchange Carrier ELF Executable and Linking Format + Extremely Low Frequency ELOS Embedded-Objects Linked Across Systems ELPH Entr Level PowerShot [Canon] ELS Entry Level System EM Electronic Mail + Emphasized + End of Medium + Expanded Memory EMA Electronic Mail Association + Enterprise Management/Memory Architecture EMACS Editing Macros [Unix] E-MAIL Electronic Mail EMB Extended Memory Block [LIM/AST] EMBARC Electronic Mail Broadcast to a Roaming Computer [Motorola] EMC Electromagnetic Compatibility + Enhanced Memory Chip + E-Mail Connection + Extended Math Coprocessor EMCC * Eckert-Mauchly Computer Company (World's first computer company, founded by Presper Eckart and John Mauchly, who invented and built the first UNIVAC) EMF EMI .EML EMM EMP EMR Extended Metafile Format [Microsoft] ERAS Electronic Routing and Approval Electromagnetic Interference System [Hughes Aircraft] Electronic Mail (file name extension) ERD Emergency Repair Disk + Entity Expanded Memory Manager Relationship Diagram Electro-Magnetic Pulse ERIC Educational Resources Information Electro-Magnetic Radiation + Center [Internet] Enhanced Metafile Record ERLL Enhanced Run Length Limited EMS Electronic Mail System + ERMA * Electronic Recording Method, Electronic Message Service + Accounting Energy Management System + [General Electric] Enhanced Messaging Service + EROM Erasable Read Only Memory Expanded Memory Specification [LIM] EROS Earth Resources Observation System EMSAPI Extended Messaging Services [U.S. Geological Survey] Application ERP Effective Radiated Power + Programming Interface Enterprise Resource Planning EMWAC European Microsoft Windows NT ERR Error Academic Centre ER/RC Extended Result/Response Code .ENC Encoded (file name extension) ERU Emergency Recovery Utility ENDEC Encoder/Decoder [Microsoft] ENDS Ends Segment ES Extra Segment ENIAC * Electronic Numerical Integrator ESA Enterprise Systems Architecture [IBM] Analyzer and + Computer (First fully electronic European Space Agency digital computer) ESB Enterprise Service Bus ENQ Enquiry ESC EISA System Component + Escape ENSS Exterior Nodal Switching Subsystem ESCD Extended System Configuration Data [Internet] ESCM Extended Services Communications EOA End Of Address Manager [IBM] EOB End Of Block ESCO Extemded Synchronous Connections EOC End Of Conversion ESCON Enterprise System Connection EOF End Of File + Enterprise Objects (Architecture) [IBM] Framework ESC/P Epson Standard Code for Printers [Next Computer] ESD Electronic Software Distribution + EOI End Of Interrupt + End Or Identify Electrostatic Discharge + Emergency EOJ End Of Job Startup Disk EOL End Of Line + End Of List ESDI Enhanced Small/System Device EOM End Of Message Interface EOR Exclusive OR (Also XOR) ESDRAM Enhanced SDRAM EOS Earth Observing System [NASA] + ESF Extended Superframe Electro-Optical System [Canon] + ESI End System Identifier + End Of String + Error Correction Code Enhanced Serial Interface on SIMM (specification) [Hayes] EOSDIS Earth Observing System Data and ESMR Enhanced Specialized Mobile Radio Information System [NASA] ESMTP Extended Simple Mail Transfer EOT Embedded Open Type (format) Protocol [Microsoft] + ESN Electronic Security/Serial Number End Of Table + End Of Tape (marker) + ESP Emulation Sensing Processor + End Of Text + Encapsulating Security Payload End Of Transmission (header) + EP Electrophotographic Engine Enhanced Serial Port [Hayes] + EPC Electronic Product Code Enhanced Service Provider + EPIC Explicitly Parallel Instruction Enterprise System Platcorm + Computing (chip) [Intel] Estimated Selling Price + EPG Electronic Program Guide Eudora Sharing Protocol [Qualcomm] EPL Effective Privilege Level ESR Event Service Routine EPLD Electrically Programmable Logic ESS Electronic Switching System Device ESSENCE Electronic Surveillance System for EPM Enhanced Editor for Presentation the Early Notification Manager [IBM] + of Community-Based Epidemics [Johns Enterprise Process Management [IBM] Hopkins University] EPP Enhanced Parallel Port ESSID Extended Service Set Identifier EPROCESS Executive Process ESU Electro-Static Unit EPROM Electrically Programmable Read Only ET Enhancement Technology Memory + ETACS Extended Total Access Communication Erasable Programmable Read Only System [IBM] Memory ETANN Electrically Trainable Analog Neural .EPS Encapsulated PostScript (file name Network (chip) [Intel] extension) ETB End of Transmission Block EPSF Encapsulated PostScript Files ETC Electronic Toll Collection + ERA Extended Registry Attributes Enhanced Throughput Cellular (modem protocol) [AT&T] E-TEXT Electronic Text ETF Enriched Text Format ETOM Electron-Trapping Optical Memory ETPL Endorsed Tempest Products List ETS Econometric Time Series ETX End Of Text EU Execution Unit .EU European Union (Domain Name) [Internet] EUC End-User Computing + Extended Unix Code [IBM] EUDC End-User Defined Character EUDORA (Named after author of story: "Why I Live at the P.O.", Ms. Eudora Welty) EUI End-User Interface EULA End-User License Agreement EUVL Extreme Ultraviolet Lithography EVDO Evolution Data Only/Optimized EVE Extensible VAX Editor EVGA Extended Video Graphics Array + Extended Video Graphics Adapter EWAN Emulator Without A Good Name [Internet] EWS Employee Written Software [IBM] EWTS Enterprise Web Training System EXCA Exchangeable Card Architecture [Intel] .EXE Executable (file name extension) EXE2BIN Program used to convert an (.EXE) file to binary format (.COM) file EXIF Exchangeable Image File Format EXM Enterprise Messaging Exchange [Lotus] EXP Exponent EXT External EXTRN External Reference E-ZINE Electronic Magazine FCL FCPGA FCR FCRAM FCS Sequence FD Duplex FDC FDDI Fibre Channel Loop Flip Chip Pin Grid Array [Intel] FIFO Control Register Fast-Cycle RAM Fiber Channel Standard + Frame Check Floppy Disk + Floppy Drive + Full Floppy Disk Controller Fiber Digital Device Interface + Fiber Distributed Data Interface Floppy Drive High Density Fault Detection, Isolation and FDHD FDIR Recovery FDISK Fixed Disk FDM Frequency Division Multiplexing FDMA Frequency Division Multiple Access FDSL (See DSL) FDX Full Duplex FEC Forward Error Correction FECN Forward Explicit Congestion Notification FED Field Emission/Emitter Display FEFO First-Ended, First-Out FEP Front End Processor FEPI Front End Programming Interface FEPROM Flash EPROM FERAM Ferroelectric RAM FESDK Far East Software Development Kit [Microsoft] FET Field Effect Transistor FF Flip-Flop + Form Feed FFD Full Funtion Device FFDC First Failure Data Capture [IBM] FFS Fast File System FFST First Failure Support Technology [IBM] FFT Fast Fourier Transform + Final Form Text [IBM] FG Floating Gate FGREP Fixed Global Regular Expression Print [Unix] FHS Fan Heat-Sink FHSS Frequency-Hopping Spread Spectrum FIA File Integrity Assessment FIB Forwarding Information Base | TOP | UP to E | DN to G | BOTTOM | FIF Fractal Image Format FIFO First-In, First-Out FAB Computer-Chip Fabrication Plant FILO First-In, Last-Out FAC File Access Code FINDSTR Find Strings FAMOS Floating Gate Avalanche MOS FIOS (FiOS) Fiber Optic Services [Verizon] FANS Future Air Navigation System FIP File Processor Buffering FAP File Access Protocol Federal Information Processing FAPI Family Application Program Interface FIPS Standard FAQ Frequently Asked Question FIR Fast Infrared + Finite Impulse FARNET Federation of American Research Response Networks [Internet] .FIRM Business or Firm (Domain Name) FASIC Function and Algorithm-Specific [Internet] Integrated Circuit FIRST Forum of Incident Response and FAT File Allocation Table Security Teams FAX Facsimile FITS Flexible Image Transport System .FAX Fax (file name extension) FIU Fingerprint Identification Unit FBC Find By Content [Sony] FC/AL Fiber Channel/Arbitrated Loop FIX Federal Internet Exchange FCB File Control Block FK Foreign Key FCC Federal Communications Commission FLA Four Letter Acronym FCC: File Carbon Copy FLC Ferro-electric Liquid Crystal FCCSET Federal Coordinating Council for Field Science, Engineering and Technology FLD FLIR Forward Looking Infrared (system) FC/EL Fiber Channel/Enhanced Loop FLL FoxPro Link Library [Microsoft Fox FCI Flux Changes per Inch F... Pro] FLOPS .FLR FLV FM FMD FMRI FMS FMT FMV FNT FOCUS FOD FOG FOIP FOIRL [IEEE] FOLDOC FOM .FON file name File Transfer and Access Method FTL Flash Transition Layer [Intel] FTM Flat Tension Mask [Zenith] FTP File Transfer Protocol [Internet] FTPD File Transfer Protocol Daemon FTTB Fiber To The Basement FTTC Fiber To The Curb FTTN Fiber To The Neighborhood FTS Federal Telecommunication System FTX Fault Tolerant Unix FUI File Update Information FUNC Function FUS Fast User Switching FUSE Far Ultraviolet Spectroscopic Free On-Line Dictionary Of Computing Explorer [JHUAPL] Fiber Optics Modem FVT Full Video Translation Font + Phone + Phone Directory (all FWTK Firewall Toolkit FXP File Exchange Protocol extensions) FYI For Your Information .FOR Fortran source code (file name extension) FORTH (Programming Language)(See HLL) FORTRAN Formula Translator (Programming Language)(See HLL) FOSE Federal Office Systems Exposition FOSI Format Option Specification Instance | TOP | UP to F | DN to H | BOTTOM | FOSSIL Fido/Opus/Seadog Standard Interface Layer GA General Availability FPC Flexible Printed Circuit + GAAP Generally Accepted Accounting Floating Point Calculation Principles FPCE Floating-Point C Extension GAC Global Assembly Cache (specification) GAL Generic Array Logic FPGA Field Programmable Gate-Array GAMS General Algebraic Mathematical System FPLA Field Programmable Logic-Array GAPI Gateway Application Programming FPM Fast Page Mode Interface FPP Fixed Path Protocol + Floating Point GART Graphics Address Relocation Table Processor GATT Graphics Address Translation Table FPR Floating-Point Register GAWD Global Access Wireless Database FPS Favorite Picture Selection + Frames Gb Gigabit (1,024 megabits) + Per Second (One Billion Bits of Information) FPT Forced Perfect Termination GB Gigabyte (1,024 megabytes) + FPU Floating Point Unit (One Billion Characters of FPX FlashPix (format) [Kodak] Information) FQDN Fully Qualified Domain Name GCC GNU C-Compiler [Unix] [Internet] GCCD Glass-Passivated Ceramic Chip Diode FRAD Frame Relay Access Device + GCR Group Code Recording Frame Relay Assembler/Disassembler GDA Global Data Area + GNOME Data Access FRAG Fragment + Fragmentation GDB GNU Debugger FRAM Ferroelectric Random-Access Memory GDDM Graphics Data Display Manager FRC Functional Redundancy Checking GDG Generation Data Group [IBM] FRED Frame Editor + Front-End to Dish GDI Graphical Device Interface FRMR Frame Reject GDLC Generic Data Link Control [IBM] FRPI Flux Reversals Per Inch GDP Graphic Draw Primitive FRS Family Radio Service GDR Gas Discharge Arrestor .FRS WordPerfect Graphics Driver (file GDT Geometric Dimensioning and name extension) Tolerancing + FS File Separator Global Descriptor Table + FSB Front Side Bus Graphics Development Toolkit FSD File System Driver [OS/2] GECOS General Electric Comprehensive FSE Full Screen Editor Operating System FSF Free Software Foundation [Internet] GEIS General Electric Information Service FSK Frequency Shift Keying (company) FSN Full Service Network GEM Graphics Environment Manager (DRI FSO Free Space Optics Program) FSP File Service Protocol GENIE General Electric Network for FSR Free System Resources Information Exchange FST Flat Square Tube (monitor) GEO Geostationary Earth Orbit Floating Point Operations Per Second Folder (file name extension) Flash Video Frequency Modulation Fluorescent Multilayer Disk Functional Magnetic Resonance Imaging Forms Management System Format Full Motion Video Font Forum of Control Data Users Fax On Demand First Osborne Group Fax Over Internet Protocol Fiber Optic Inter Repeater Link F/T FTAM + Full Time File Transfer, Access and Management G... GEOS Global Entity Ordering System + GRADD Graphics Adapter Device Driver [IBM] GEOS Graphic Environment Operating System GRE Generic Routing Encapsulation + [Geoworks] Graphics Engine GET Get Execute Trigger GREP Global Regular Expression Print GFDL GNU Free Documentation License .GRF Graph (file name extension) GFI General Format Identifier + Ground- .GRP Group (file name extension) Fault Interceptor GS Group Separator GGP Gateway-Gateway Protocol [Internet] GSI General Server Interface GHZ Gigahertz GSM Global Shared Memory + .GID Topics (file name extension) Global System for Mobile[Microsoft] Communications (network) .GIF Graphics Interchange Format (file GSNW Gateway Service for NetWare name extension) [Microsoft] GIG-E Gigabit Ethernet GSP Generic Server Passer + Global GIGO Garbage In, Garbage Out Service Provider GII Global Information Infrastructure GSR Gigabit Switch Router GILS Government Information Locator GSTN General Switched Telephone Network Service GTE General Telephone Electronics GIMP GNU Image Manipulation Program (corporation) GIMPS Great Internet Mersenne Prime Search GTF Generalized Timing Format GINA Graphical Identification and GTL Graphic Template Library + Authentication Gunning Transceiver Logic GIS Geographic Information System + GTO Guide To Operations [IBM] Global Information Solutions [AT&T] GTP * Geometry Theorem Prover GIX Global Internet Exchange [Internet] GTS Generic Traffic Shaping [Cisco] GKS Graphical Kernel System GUI Graphical User Interface GL Graphics Language GUID Globally Unique Identifier + G/L General Ledger Global Universal Identifier GLIS Global Land Information System [US GVT Global Virtual Time Geological Survey] GW-BASIC Gee Whiz BASIC GLL Geograpic Position-Latitude/Longitude GWES Graphic, Windowing and Event GLM General Linear Models Subsystem GLOBE Global Learning by Observations to .gz Compressed file (compressed filename Benefit extension the Environment [Internet] using GNU gzip .GLY Glossary (file name extension) compression/decompression program) [Unix] [Microsoft Word] GZIP GNU Zip GMDI Gigabit Media-Dependent Interface GML Generalized Markup Language GMP Global Mobile Professional GMR Giant Magneto-Resistive (read head technology) GMRS General Mobile Radio Service GMS Global Management System + | TOP | UP to G | DN to I | BOTTOM | Global Messaging Service [Novell] GMT Greenwich Mean Time .H Header (file name extension) [C] GND Ground (signal/system) HACMP High Availability Cluster MultiGNN Global Network Navigator Processing [IBM] GNU Gnu's Not Unix (operating system) HAL Hard Array Logic + Hardware GNOME GNU Network Object Model Environment Abstraction Layer + GOAD GNOME Object Activation Directory House-Programmed Array Logic GOS Grade Of Service HAL * Heuristically Programmed Algorithmic GOSIP Government Open Systems (computer) Interconnection Profile [from 1968 movie "2001: A Space .GOV Governmental (Domain Name) [Internet] Odyssey"] GP Gas Plasma + General Purpose HAP Host Access Protocol GPF General Protection Fault HARP-MRI Harmonic Phase MRI GPI Graphics Programming Interface HASP Houston Automatic Spooling Priority GPIB General Purpose Information/Interface (System) Bus HBA Host Bus Adapter GPIO General Purpose Input/Output HCL Hardware Compatibility List GPL General Public License HCSS High Capacity Storage System GPR General Purpose Register [IBM] HCT Hardware Compatibility Test GPRC Glass Passivated Rectifier Chip HCU Home Computer User GPRS General Packet Radio Service HD Hard Disk + High Density GPS Global Positioning Satellite/System + HDA Head Disk Assembly Global Product Specification HDC High Dependability Computing GPSS * General Purpose Systems Simulator [Carnegie Mellon] (language) HDCD High Definition Compatible Digital GPU Graphics Processing Unit HDCP High-Bandwidth Digital Content H... Protection + High Definition Copy Protection HDD Hard Disk Drive HDF Hierarchical Data Format [NCSA] HDI Head to Disk Interference HDL Hardware Description Language HDLC High-Level Data Link Control HDM Hardware Device Module HDMI High-Definition Multimedia Interface HDML Handheld Device Markup Language HDR Header + High Data Rate + High Dynamic Range (photography) .HDR Header Data (file name extension) HDSC High Density Signal Carrier [DEC] HDSL (See DSL) HDSS Holographic Data Storage System HDT Host Digital Terminal HDTV High Definition Television HDVD High Definition Volumetric Display HDW Hardware HDX Half Duplex HEOS High Earth Orbiting Satellite HERC Hercules HEX Hexadecimal HFC Hybrid Fiber-Coaxial HFS Hierarchical File System [Macintosh] HFT High Function Terminal [IBM] HGA Hercules Graphics Adapter HGCP Hercules Graphics Card Plus HGP Human Genome Project HH Hour HID Human Interface Device HIDS Host-Based Intrusion Detection System HIF Hyper-G Interchange Format HIFD High-Density Floppy Disk HIL Human Interface Link [HP] HIMEM High Memory HIPPI High Performance Parallel Interface HLA High Level Architecture HLCO High Low Close Open HLL High Level Language HLLAPI High Level Language Application Programming Interface .HLP Help (file name extension) HLQ High Level Qualifier HLS Hue, Luminance, Saturation (color model) HLT Halt HMA High Memory Area [Microsoft] + Hub Management Architecture HMD Head Mounted Display HMI Human-Machine Interface HMM Hidden Markov Model HMMP Hyper-Media Management Protocol HMOS High Density Metal Oxide Semiconductor + High Speed Metal Oxide Semiconductor HMP Host Monitoring Protocol HOL High Order Logic HOLAP Hybrid OLAP HOTT Hot Off The Tree (electronic newsletter) HOV High Occupancy Vehicle HP Hewlett-Packard (Company) HPC Handheld Personal Computer HPCC High Performance Computing and Communications HPDJ Hewlett-Packard Desk Jet HPFS High-Performance File System HPG Hewlett-Packard Graphics HPGL Hewlett-Packard Graphics Language HPIB Hewlett-Packard Interface Bus HPLJ Hewlett-Packard Laser Jet HPNA Home Phoneline Networking Alliance HPOM Home Page Objects Model [Microsoft] HPPA Hewlett-Packard Precision Architecture HPPI High Performance Parallel Interface HPR High Performance Routing [IBM] HPSB High Performance Serial Bus HPTL High Performance Technical Computing HPUX Hewlett-Packard Unix HPW High Performance Workstation [Sun] .HQX BinHex (file name extension) [Macintosh] HRIS Human Resource Information System HRG High Resolution Graphics HRMS Human Resource Management System HRTF Head Related Transfer Function HS High Speed HSB Hue, Saturation, Brightness (color model) HSC Hierarchical Storage Controller + High Speed Channel HSDPA High Speed Download Packet Access HSI Hue, Saturation, Intensity HSM Hierarchical Storage Management HSP High Speed Printer/Processor HSSI High Speed Serial Interface HST High Speed Technology [U.S. Robotics] .HST History + Host (file name extensions) HSV Hue Saturation Value HTL Human In The Loop HTML HyperText Markup Language HTTP HyperText Transfer Protocol HTTP-NG HTTP Next Generation HTTPS HyperText Transfer Protocol Secure HUD Heads Up Display HUT Hopkins Ultraviolet Telescope H/V Horizontal/Vertical HVD Holographic Versatile Disc HVP Horizontal & Vertical Position H/W Hardware HWCP Hardware Code Page HWD Height-Width-Depth HWDM Hyperfine Wave Division Multiplexing .HYP Hyphenation (file name extension) HYTELNET Hypertext-browser for Telnet Accessible Sites Hz Hertz I... | TOP | UP to H | DN to J | BOTTOM | IA Intel Architecture [Intel] IAB Internet Architecture Board IAC Inter-Application Communication [Macintosh] IAD Integrated Access Device IAEC International Address Element Code IAFIS Integrated Automatic Fingerprint Identification System IAG Instruction Address Generation IAK Internet Access Kit [IBM] IAL * International Algorithmic Language (ALGOL was first called IAL) IANA Internet Assigned Numbers Authority IAP Internet Access Provider IAS Internet Access Server IAT Import Address Table IAUP Internet User Account Provider IBC Instrument Bus Computer IBCS Intel Binary Compatibility Specification IBIP Information Based Indicia Program [U.S. Postal Service] IBL Inbound Links [Google] IBM International Business Machines (Corporation) IBM-GL IBM Graphics Language IC Input Circuit + Integrated Circuit + Interrupt Controller ICA Intelligent Console Architecture + Intra-application Communications Area ICANN International Corporation for Assigned Names and Numbers ICAP Internet Calendar Access Protocol [Lotus] ICAS Intel Communicating Applications Specifications ICB Internet Citizen's Band ICCP Institute for the Certification of Computing Professionals ICD International Code Designator ICE In-Circuit Emulator [Intel] + Integrated Computing Environment [Langley Research] + Internal Compiler Error ICES Interference-Causing Equipment Standard ICF Internet Connection Firewall [Microsoft] ICI Image Component Information + InterCPU Interrupts ICL Interface Clear ICLID Incoming-Call Line Identification ICM Image Color Matching [Kodak] + Incoming Message .ICM Image Color Management (file name extension) ICMP Internet Control Message Protocol [Novell] .ICO Icon (file name extension) ICOMP (iCOMP)Intel Comparative Microprocessor Performance [Intel] ICP Image Coprocessor + Integrated Channel Processor ICQ I Seek You (messaging program0 ICR Intelligent Character Recognition ICS Internet Connection Sharing [Microsoft] + Intuitive Command Structure ICSAPI Internet Connection Services API ICU Instruction-Cache Unit + Intel Configuration Utility [Microsoft] + ISA Configuration Utility ID Identification + Identifier IDA Integrated Digital Access + Intelligent Disk Array + Intelligent Drive Array IDAPI Integrated Database Application Programming Interface IDC Integrated Database/Desktop Connector + Internet Database Connector [Microsoft] + Internet Data Center IDDE Integrated Development & Debugging Environment [Symantec] IDE Imbedded Drive Electronics + Integrated Development Environment [Borland] + Integrated Device/Drive Electronics + Intelligent Drive Electronics + Interactive Design and Engineering + Interface Design Enhancement IDEA International Data Encryption Algorithm IDEN Integrated Data Enhanced Network IDF Intermediate Distribution Frame IDI Initial Domain Identifier IDIV Integer Divide IDL Interactive Data Language + Interface Definition Language IDM Integrated Document Management IDMS Integrated Data Base Management System IDNX Integrated Digital Network Exchange [IBM] IDP Integrated Data Processing IDR Intelligent Document Recognition IDS Image Display System + Intrusion Detection System IDSL (See DSL) IDT Interface Design Tool + Interrupt Descriptor Table .IDX Index (file name extension) IE Internet Explorer [Microsoft] IEC International Electrotechnical Commission IEEE Institute of Electrical and Electronics Engineers IEF Information Engineering Facility IEMSI Interactive Electronic Mail Standard Identification IEN Internet Engineering Notes IETF Internet Engineering Task Force IESG Internet Engineering Steering Group I/F Interface IFC Internet Foundation Classes IFD Image File Directory IFF Interchangeable File Format [Amiga] IFG Incoming Fax Gateway IFP Instruction Fetch Pipeline IFS Installable/Integated File System IFSM Information Systems Management IGA Integrated Graphics Array IGC Integrated Graphics Controller IGES Initial Graphics Exchange Standard IGFET Insulated-Gate Field Effect Transistor IGMP Internet Group Management/Multicast Protocol IGP Interior Gateway Protocol IGRP Interior Gateway Routing Protocol [Cisco] IGS Internet Go Server IHD Integrated Help Desk [IBM] IHV Independent Hardware Vendor IIF Immediate Interface III Interstate Identification Index [NCIC] IIOP Internet Inter-ORB Protocol IIR Immediate Impulse Response IIS Internet Information Server/Services [Microsoft] IITF Information Infrastructure Task Force IKE Internet Key Exchange IKMP Internet Key Management Protocol IKP Internet Keyed Payments [IBM] ILA Image Light Amplifier ILE Integrated Language Environment [IBM] ILEC Incumbent Local Exchange Carrier ILM Information Life-Cycle Management ILP Instruction-Level Parallelism ILS International Language Support IM Instant Messenger IMAC Internet Macintosh [Apple] IMACS Image Management and Communication System IMAP Interactive Mail Access Protocol + Internet Message Access Protocol IMAX Maximum Image IMDB In-Memory Database IMDS Image Data Stream (format) [IBM] IME Input Method Editor/Engine IMEI International Mobile Equipment Identifier IMG Image .IMG Image Data (file name extension) IML Initial Microcode Load [IBM] IMP Information/Interface Message Processor + Internet/Intranet Input Method Protocol IMPA Intelligent Multi-Port Adapter [DCA] IMPI Interoperable Message Passing Interface IMPP Internet Messaging and Presence Protocol IMR Internet Monthly Report IMS Information Management System + Intermediate Maintenance Standards IMSI International Mobile Subscriber Identifier IMSP Internet Message Support Protocol IMTC International Multimedia Teleconferencing Consortium IMTV Interactive Multimedia Television IMUL Integer Multiply IMUX Inverse Multiplexer IN Input INC Increment .IND Index (file name extension) .INF Information (file name extension) .INFO Information Services (Domain Name) [Internet] INFS Internet Network File System .INI Initialize (file name extension) INIT Initialization + Initialize INM Integrated Network Management INND Internet News Daemon INS Input String + Integrated Network Server INT Integer + Internal + Interrupt + .INT International Organization (Domain name) [Internet] INTA Interrupt Acknowledge INTEL Integrated Electronics (company) INTERNIC (InterNIC)Internet Network Information Center INTO Interrupt if Overflow occurs I2O Intelligent Input/Output I/O Input/Output IOC IOCC Inter-Office Channel Input/Output Channel Converter + Input/Output Controller Chip IOCS Input/Output Control System IOCTL Input/Output Control IODE Integrated Development and Debugging Environment [Symantec] IOF Infrared Optical Film IOP Input/Output Processor IOPL Input/Output Privilege Level IOR Interoperable Object Reference IOS Internet Operating System IOSGA Input/Output Support Gate Array IP Instruction Pointer + Intellectual Property + Internet Protocol IPBF Installed Peripheral Base Flexibility IPC Instructions Per Clock + Interprocess Communication IPCMOS Interlocked Pipeline CMOS [IBM] IPCP Internet Protocol Control Protocol IPCS Integrated PC Server IPDC Internet Protocol Device Control IPDS IBM Personal Dictation System [IBM] + Intelligent Printer Data Stream [IBM] IPF Invalid Page Format IPFC Information Presentation Facility Compiler [IBM] IPI Intelligent Peripheral Interface IPL Initial Program Load/Loader + Ion Projection Lithography IPL * Information Programming Language IPM Images Per Minute + Interpersonal Message IPMI Intelligent Platform Management Interface IPNG Internet Protocol, next generation IPP Integrated Performance Primitives [Intel] + Internet Printing Protocol IPR Intellectual Property Rights IPSE Integrated Project Support Environment IPSEC Internet Protocol Security IPTC International Press Telecommunications Council IPTV Internet Protocol Television IPX Internetwork Packet Exchange [Novell] IQL Interactive Query Language IR Infrared IRC Internet Relay Chat IRD Integrated Receiver/Descrambler IRDA (IrDA)Infrared Data Association IRDS Information Resource Dictionary System IRET Interrupt Return IRF Intermediate Routing Function + Inheritance Rights Filter [Novell] IRL Interactive Reader Language + InterRepeater Link IRLAP Infrared Link Access Protocol IRLED Infrared Light Emitting Diode IRM Information Resource Management + Inherent Rights Mask IRP I/O Request Packet IRQ Interrupt Request IRQL Interrupt Request Level IRTF Internet Research Task Force IRX Information Retrieval Experiment IS Information System + Interrupt Status ISA [IBM] + Industry Standard Architecture (bus) ITX Intermediate Text Block IU Integer Unit Instruction-Set Architecture IUAP Internet User Account Provider ISAKMP Internet Security Association and Key IUS/ITB Interchange Unit Management Protocol Separator/Intermediate Transmission ISAM Indexed Sequential-Access Block Management/Method IVDS Integrated Voice and Data Systems ISAPI Internet Server API [Microsoft] IVIS Interactive Video Information System ISAPS Intelligent Scene Analysis based on IVL Independent Vendor League + Intel Photographic Space [Canon] Verification Lab ISBN International Standard Book Number IVR Interactive Voice ISC Instruction Set Computer + InterRecognition/Response Systems IVS Interactive Videodisk System Communication [IBM] IVT Interrupt Vector Table ISCSI (iSCSI) Internet SCSI IV&V Independent Verification & Validation ISD Image Section Descriptor + I-WAY Information Highway Instructional Systems Design IXC Interexchange Carrier ISDN Integrated Services Digital Network ISH Information Super Highway ISI Internally Specified Index ISIS Integrated Systems and Information Services ISKM Internet Starter Kit for the Macintosh | TOP | UP to I | DN to K | BOTTOM | ISL Interactive System Language + Inter Switch Link [Cisco] JA Jump Address + Jump if Above ISM Integrated Services Model [IETF] + JAD Joint Application Design/Development Internet Service Manager [Microsoft] JADE Java Addition to the Default System ISMF Interactive Storage Management JAE Jump if Above or Equal Facility JANET Joint Academic Network ISOC Internet Society JAR Java Archive (file format) ISO International Organization for JAVAME Java Platform Micro Edition Standardization JAXM Java API for XML Messaging ISP Internet Service Provider + Interrupt JBE Jump if Below or Equal Stack Pointer + JC Jump if Carry set Interrupt Status Port JCA Java Cryptography Architecture ISPF Interactive System Programming JCE Java Cryptography Extension Facility JCL Job Control Language ISR Information Storage and Retrieval + JDBC Java Database Connectivity Interrupt Service Routine + JDF Job Description format Interrupt Status Register JDK Java Development Kit ISRC International Standard Recording Code JDSL Java Data Structures Library ISS Internet Sharing Software JE Jump if Equal ISSN International Standard Serial Number JEDEC Joint Electronic Devices Engineering ISV Independent Software Vendor Council IT Information Technology JEIDA Japanese Electronics Industry ITB Information Technology Branch + Development Association Intermediate Text Block JEPI Joint Electronic Payment Initiative ITC International Typeface Corporation JES Job Entry System ITE Information Technology Equipment JFC Java Foundation Classes ITF Interactive Test Facility JFET Junction Field Effect Transistor ITIL Information Technology Infrastructure JFIF JPEG File Interchange Format Library JFS Journaled File System [IBM] ITN Identification Tasking and Networking JG Jump if Greater ITP Internet Transaction Processing JGE Jump if Greater or Equal ITR Information Technology Research [NSF] JHUAPL Johns Hopkins University + Applied Physics Laboratory Input Transaction Record + Internet JIPS JANET Internet Protocol Service Talk Radio JIT Just-In-Time (compiler) ITSM Information Technology Service JL Jump if Less Management JLE Jump if Less than or Equal to ITU International Telecommunications JLIP Joint Level Interface Protocol Union JMAPI Java Management Application Program ITUG International Telecommunications User Interface Group J2ME Java 2 Platform Micro Edition ITU-TIES ITU-Telecom Information Exchange JMF Java Media Framework [Sun] Services JMI Java Metadata Interface ITU-TSS ITU-Telecommunication Standards JMP Jump Section JMS Java Message Service ITV Interactive Television JMX Java Management Extensions J... JNA JNAE JNB JNBE JNG JNGE JNI .JNK JNLE JNO JNP JNS JOE JOHNNIAC* JOSS Corp.] JOVIAL Jules' Own Version of the International Algorithmic Language JPE Jump if Parity Even JPEG Joint Photographic Experts Group JPL Jet Propulsion Laboratory JPNF Join-Projection Normal Form JPO Jump if Parity Odd JRE Java Runtime Environment JS Jump if Sign JSP Java Server Page JSR Java Specification Request JSSE Java Secure Socket Extension JTAG Joint Test Action Group [IEEE] JTAPI Java Telephony Application Programming Interface JZ Jump if Zero JNZ Jump if Not Zero JSS Java-Script Style Sheet JUGHEAD Jonzy's Universal Gopher Hierarchy Excavation and Display [Internet] JVM Java Virtual Machine Jump if Not Above Jump if Not Above or Equal Jump if Not Below Jump if Not Below or Equal Jump if Not Greater Jump if Not Greater or Equal Java Native Interface Junk (file name extension) Jump if Not Less or Equal Jump if No Overflow Jump if No Parity Jump if No Sign Java Objects Everywhere John Neumann Integrator and Automatic Computer [Rand Corp.] * Johnniac Open Shop System [Rand K... | TOP | UP to J | DN to L | BOTTOM | K-12 Kindergarten through 12th Grade [US Education System] KAM Keep Alive Memory Kb Kilobit KB Keyboard + Kilobyte (1,024 bytes) KBD Keyboard (also KEYB) KBD$ Keyboard [OS/2] KBE Knowledge Based Engineering Kbps Kilobits Per Second KBps Kilobytes Per Second KDE K Desktop Environment KDT Key Definition Table KEFIR Key Findings Reporter [GTE] KEYBBE Foreign language KEYBoard program Belgium KEYBBR Foreign language KEYBoard program Brazil KEYBCF Foreign language KEYBoard program Canadian-French KEYBCZ Foreign language KEYBoard program Czechoslovakia (Czech) KEYBDK Foreign language KEYBoard program - Denmark KEYBFR Foreign language KEYBoard program France KEYBGR Foreign language KEYBoard program Germany KEYBHU Foreign language KEYBoard program Hungary KEYBIT Foreign language KEYBoard program Italy KEYBLA Foreign language KEYBoard program Latin America KEYBNL Foreign language KEYBoard program Netherlands KEYBNO Foreign language KEYBoard program Norway KEYBPL Foreign language KEYBoard program Poland KEYBPO Foreign language KEYBoard program Portugal KEYBSF Foreign language KEYBoard program Swiss-French KEYBSG Foreign language KEYBoard program Swiss-German KEYBSL Foreign language KEYBoard program Czechoslovakia (Slovak) KEYBSP Foreign language KEYBoard program Spain KEYBSU Foreign language KEYBoard program Finland KEYBSV Foreign language KEYBoard program Sweden KEYBUK Foreign language KEYBoard program United Kingdom KEYBUS Foreign language KEYBoard program United States KEYBYU Foreign language KEYBoard program Yugoslavia KHz Kilohertz KIF Knowledge Interchange Format KIPS Kodak Internet Print Service [Kodak] KIS Knowbot Information Service [Internet] KMZ Keyhole Markup Language KPI Kernel Programming Interface KQML Knowledge Query and Manipulation Language KRS Knowledge Retrieval System KSDS Keyed Sequential Data Set KSH Korn Shell (program) [Unix] KSPH Keystrokes Per Hour KSR Keyboard Send Receive KVM Keyboard, Video, Mouse (switch) + Kilobyte Virtual Machine L... | TOP | UP to K | DN to M | BOTTOM | L2F Layer Two Forwarding [Cisco] L2TP Layer Two Tunneling Protocol LADDR Layered Device Driver Architecture [Microsoft] LALL Longest Allowed Lobe Length LAN Local Area Network LANACS Local Area Network Asynchronous Connection Server LANDP LAN Distributed Platform L2F Layer 2 Forwarding (protocol) [Cisco] LANE Local Area Network Emulation LFAP Lightweight Flow Admission Protocol LANG Language LFE Low Frequency Effects LAP Linux Application Platform LFI Last File Indicator LAPB Link Access Procedure Balanced LFM Log File Monitor (protocol) LFN Long File Name LAPD Link Access Procedure on the DLFT Low Function Terminal [IBM] Channel (protocol) LFU Least Frequently Used LAPM Link Access Procedure for Modems LGA Leadless Grid Array LAR Load Access Rights LGDT Load Global Descriptor Table LASER Light Amplification by Stimulated LGPL Lesser General Public License [GNU] Emission of Radiation LIAS Library Information Access System LASTport Local Area Storage Transport .LIB Library (file name extension) (protocol) [DEC] LIC Line Interface Coupler [IBM] LAT Local Access Terminal + LICS Lotus International Character Set Local Area Transport [DEC] [LDC] LATA Local Access and Transport Area LIDT Load Interrupt Descriptor Table LAVC Local Area VAX Cluster LIEP Large Internet Exchange Packet LAWN Local Area Wireless Network [Novell] LB Left Button (of 2 or 3 button Mouse) LIF Low Insertion Force LBA Logical Block Addressing LIFO Last In, First Out LBL Label LILO Last In, Last Out LBR Librarian LIM Lotus/Intel/Microsoft .LBR Library (file name extension) LIMA Lotus/Intel/Microsoft/AST LBT Listen Before Talk LIMDO Light Intensity Modulation Direct LBX Local Bus Accelerator Overwrite LCA Lotus Communications Architecture LIMM Light Intensity Modulation Method [Lotus] LIMS Library Information Management System LCC Leadless Chip Carrier LINQ Language Integrated Query LCCM LAN Client Control Manager [IBM] LINUX (Operating system named after Linus LCD Liquid Crystal Display + Lowest Torvalds) Common Denominator LIP Large Internet Packet LCF Low Cost Fiber LIPO (LiPo) Lithium Polymer (battery) LCK Library Construction Kit [Microsoft LIPS Lightweight Internet Person Schema + FoxPro] Logical Inferences Per Second LCOS (LCoS) Liquid Crystal on Silicon LISP List Processing (Language)(See HLL) LCP Link Control Protocol LISTSERV List Server [Internet] LCR Least Cost Routing + Line Control LIU LAN Interface Unit Register LIW Long Instruction Word LCS Link Connection Subsystem LLC Logical Link Control LCSD Laminate Chip Signal Diode LLDT Load Local Descriptor Table LCU Last Cluster Used LLF Low Level Format LDA Logical Device Address LLTD Link Layer Topology Discovery LDAP Lightweight Directory Access Protocol (protocol) [IBM] LMB Left Mouse Button LDC Lotus Development Corporation LMBCS Lotus Multi-Byte Character Set LDDS Long Distance Discount Services [Lotus] (company) LMD Last Modification Date LDM Logical Disk Manager + Long Distance LMDS Local Multipoint Distribution Service Modem LMI Link/Local Management Interface LDP Label Distribution Protocol LMOS Leave Mail On Server LDT Local Descriptor Table LMR Land Mobile Radio LE Less or Equal LMS Lotus Messaging Switch [Lotus] LEA Load Effective Address LMSW Load Machine Status Word LEAD Live Early Adoption and Demonstration LMU LAN Management Utilities [IBM] + [W3C] LAN Manager for Unix LEAF Law Enforcement Access Field LN Load Number + Logarithm (Natural) LEC Local Area Network Emulation Client + LNA Local Network Administrator Local Exchange Carrier LN:DI Lotus Notes:Document Imaging LED Light Emitting Diode LNK Link LEL Link, Embed and Launch-to-edit LOB Line of Business [Lotus] LOC Lines Of Code + Loop On-Line Control LEM Language Extension Module LOCIS Library of Congress Information LEN Low Entry Networking System LEO Low Earth Orbit LOD Letter Of Destruction + Level Of LEP Light-Emitting Polymers Detail LES Local Area Network Emulation Server LODSB Load String Byte .LET Letter (file name extension) LOG Logarithm (Base 10) LEX Lexicon LOGO (Programming Language)(See HLL) LF Line Feed LON Local Operating Network LOOPE Loop while Equal LOOPNE Loop while Not Equal LOOPNZ Loop while Not Zero LOOPZ Loop while Zero LORE Line Oriented Editor LPAR Logic Programming and Automated Reasoning LPC Local Procedure Call LPD Line Printer Daemon (protocol) [Berkley] LPDU Logical Protocol Data Unit LPI Lines Per Inch LPL Lotus Programming Language [Lotus 12-3] [LDC] LPM Lines Per Minute LPN Logical Page Number LPR Line Printer + Line Printer Remote LPS Low-Power Schottky LPT Line Printer Terminal LPT1 First Parallel Printer Port LPT2 Second Parallel Printer Port LPT3 Third Parallel Printer Port LQ Letter Quality LQM Link Quality Monitoring (protocol) LR Link Register LRC Local Register Cache + Longitudinal Redundancy Check LRL Least Recently Loaded LRM Language Reference Manual + Least Recently-Used Master .LRS Language Resource (file name extension) [WordPerfect] LRU Least Recently Used LSA LAN and SCSI Adapter [IBM] + Line Sharing Adapter + Local Security Authority [Microsoft] LSAPI License Services Application Program Interface LSASS Local Security Authority Subsystem Service [Microsoft] LSB Least Significant Bit LSC Least Significant Character LSD Least Significant Digit LSI Large Scale Integration LSL Link Support Layer + Load Segment Limit LSP Layered Service Provider [Spybot] LSPR Logistics System Program Review LST List .LST List (file name extension) LTO Linear Tape Open L2TP Layer 2 Transport/Tunneling Protocol LTPS Low-Temperature Polysilicon LTR Left-To-Right + Letter + Load Task Register LU Logical Unit (Also LUN) LUA Logical Unit Application (interface) LUI Local User Input LUIS Library User Information Service LUN Logical Unit Number LUT Lookup Table LV Logical Volume [IBM] LVDS Low-Voltage Differential Signaling LVM Logical Volume Management [IBM] LW Lazy Write .LYR Lyrics (music file name extension) LZW Lempel-Ziv-Welch (algorithm) M... | TOP | UP to L | DN to N | BOTTOM | mA MAC + + Message Authentication Code * Multiple Access Computers MacPaint (file name extension) + Macro (file name extension) MACH Multilayer Actuator Head [Epson] MADE Manufacturing and Automated Design Engineering MADYMO Mathematical Dynamic Modeling [TNO] MAE Merit Access Exchange + Metropolitan Area Ethernet MAGMA Minimal Architecture for Generalized Markup Applications MAH (mAh)Milliampere-Hour MAI Multiple Applications Interface .MAI Mail (file name extension) MAJC Microprocessor Architecture for Java Computing [Sun] MALWARE Malicious Software MAN Manual [Unix] + Metropolitan Area Network MANIAC * Mathematical Analyzer Numerical Integrator and Computer MANPAGE Manual Page [Unix] MAP Maintenance Analysis Procedures + Manufacturing Automation Protocol + Memory Allocation Map .MAP Linker Map (file name extension) MAPI Mail/Messaging Applications Programming Interface [Microsoft] MAPICS Manufacturing, Accounting and Production Information Control System [IBM] MARC Machine Readable Cataloging + Multi-Technology Automated Reader Card MARVEL Machine-Assisted Realization of the Virtual Electronic Library [Library of Congress] MASM Macro Assembler [Microsoft] MASS Maximum Availability and Support Subsystem [Parallan] MAT Maintenance Access Terminal MAU Media Access/Adapter Unit + Multistation Access Unit MAVDM Multiple Application VDM MAX Maximum MB Megabyte (1,024 kilobytes) + Middle Button (of 3 button Mouse) MBASIC Microsoft BASIC [Microsoft] MBCS Multi-Byte Character Set [IBM] MBONE Multicast Backbone [Internet] MBps Megabytes Per Second Mbps Megabits Per Second MBR Master Boot Record MBX Mailbox MCA Micro Channel Adapter/Architecture [IBM] MCAD Mechanical Computer Aided Design MAC .MAC Milliampere Macintosh (Apple Macintosh Computer) Mandatory/Media/Medium Access Control MCB MCF Memory Control Block Meta Content Framework + Microsoft Connector Framework [Microsoft] MCGA Multicolor Graphics Array MCH Memory Controller Hub [Intel] MCI MCI Communications Corp. (name from initials of original company - Microwave Communications, Inc.) + Media Control Interface [Microsoft] MCL Microsoft Compatibility Labs [Microsoft] MCM Multi-Chip Module MCNE Master Certified Novell Engineer [Novell] MC-PGA Metallized Ceramic - Pin Grid Array MCPS Microsoft Certified Product Specialist [Microsoft] MC-QFP Metallized Ceramic - Quad Flat Pack MCR Modem Control Register MCSD Microsoft Certified Systems Developer [Microsoft] MCSE Microsoft Certified Systems Engineer [Microsoft] MCU Microcontroller Unit + Multi-Chip Unit [DEC] + Multipoint Control Unit MD Make Directory + Mini Disk [Sony] + Monochrome Display MDA Mail Delivery Agent + Model Drive Architecture + Monochrome Display Adapter + Multidimensional Analysis MDDBMS Multidimensional Data Base Management System .MDF Menu Definition File (file name extension) MDI Memory Display Interface + Multiple Document Interface MDIC Manchester Decoder and Interface Chip [AT&T] MDK Multimedia Developers Kit [Microsoft] MDLP Mobile Data Link Protocol MDR Metadata Repository + Minimum Design Requirement MDX Multi-Dimensional Expressions MDY Month Day Year .ME Opening Information (file name extension) (As in READ.ME) MEB Memory Expansion Board MED Minimum Expected Delay MEG Megabyte MEM Memory MEMS Micro-Electro-Mechanical System .MEN Menu (file name extension) MERCI Multimedia European Research Conferencing Integration MES Manufacturing Execution System MESI Modified, Exclusive, Shared and Invalid (protocol) MESSENGER Mercury Surface, Space Environment, Geochemistry and Ranging [JHUAPL] MET Memory Enhancement Technology [Hewlett-Packard] .MET Metafile (file name extension) MFC Microsoft Foundation Class [Microsoft] MFFS Microsoft Flash File System [Microsoft] MFI Multifunction Interpreter MFIOP Multifunction I/O Processor MFLOPS Million Floating Point Operations Per Second MFM Modified Frequency Modulation MFP Multi-Function Peripheral/Printer/Product MFPI Multifunction Peripheral Interface MFS Macintosh File System [Macintosh] + Magnetic Tape Field Search + Memory File System Modified Filing System [Revelation Technologies] MFT Master File Table + Multiprogramming with a Fixed number of Tasks MGA Monochrome Graphics Adapter MGCP Media Gateway Control Protocol MGE Modular GIS Environment MGET Multiple Get [Unix] MGML Minimal Generalized Markup Language MGR Manager MHS Message Handling Service + Message Handling System MHz Megahertz MI Management Interface MIB Management Information Base MIC Message Integrity Check + Microphone MICR Magnetic Ink Character Recognition MICRO One-millionth MICS Macro Interpretive Commands MID Mobile Information Device MIDI Musical Instrument Digital Interface MIDP Mobile Information Device Profile MIF Management Information Format .MIF Management Information Files (file name extension) MIG Metal In Gap MII Microsoft/IBM/Intel MIL Machine Interface Layer [Go Corporation] + .MIL Military (Domain name) [Internet] MIM Map Image Metafile + Metal-InsulatorMetal (screen) MIMD Multiple Instruction Multiple Data Stream (processor) MIME Multimedia Internet Message Extensions + Multipurpose Internet Mail Extensions MI/MIC Mode Indicate/Mode Indicate Common MIMO Multiple Input, Multiple Output MIN Minimum + Mobile Identification Number MIND Microsoft Internet Developer [Microsoft] MINUET Minnesota Internet Users Essential Tools [Internet] MIPS Million Instructions Per Second MIR Music Information Retrieval MIRAM Magnetoresistive Random Access Memory MIS Management Information System + Multimedia Information Sources [Internet] MISC Miscellaneous MIX Member Information Exchange .MIX Microsoft Picture It! (format) MKDIR Make Directory MKL Math Kernal Library [Intel] ML Machine Language + Meta Language MLAPI Multilingual Application Programming MPCS Mission Planning and Control Station Interface (Software) MLC Multilayer Ceramic + MPE Multiple Programming Executive [HP] Multilevel Cell (program) [Internet] MPEG Moving Picture Experts Group MLE Multi-Line Editor MPI Message Passing Interface + MLI Mobile Linux Initiative Multiprecision Integer MLID Multi-Link Interface Driver MPLS Multi Protocol Label Switching MLM Mailing List Manager [Internet] MPM Message Passing Library [IBM] MLP Meridian Lossless Packing MPMD Multiple Processor/Multiple Data MLPPP Multilink PPP MPOA Multi-Protocol over AsynchronousMM Minutes + Month Transfer-Mode MMA Microcomputer Managers Association MPP Massively Parallel MMC Matched Memory Cycle + Microcomputer Processing/Processors + Marketing Council + Message Posting Protocol + Message Microsoft Management Console Processing Program [Microsoft] + MPQP Multi-Protocol Quad Port [IBM] MultiMedia Card MPR Multipart Repeater + Multi Protocol MMCD MultiMedia Compact Disk Router [Novell] MMCX Multimedia Communication Exchange MPS Multiprocessor Specification [Lucent Technologies] MPTN Multi-Protocol Transport Network MMDS Multi-channel Multipoint Distribution MPTS Multi-Protocol Transport Services Service MPU Microprocessor Unit MMF Multi Mode Fiber (cable) MQI Messaging and Queuing Interface [IBM] MMI Man-Machine Interface MR Magneto Resistive + Modem Ready MMIS Materials Manager Information System MRAM Magnetic Random Access Memory MMPM Multi Media Presentation Manager MRCF Microsoft Realtime Compression Format MMS Multimedia Messaging Service MRCI Microsoft Realtime Compression MMU Memory Management Unit Interface MMVF Multimedia Video File [NEC] MRI Magnetic Resonance Imaging MMX Matrix Manipulation Extensions MRM Most Recently-Used Master [Intel] + MRO Multi-Region Operation Multimedia Extensions MRP Manufacturing Resources Planning + MNOS Metal Nitride Oxide Semiconductor Materials Requirement Planning MNP Microcom Networking Protocol MRPL Main Ring Path Length [Microcom] MRS Media Recognition System .MNU Menu (fine name extension) MRT Mean Repair Time MO Magneto-Optical (disk drive) MRU Maximum Receive Unit + Most Recently MOB Memory-Order Buffer Used MOBO Mother Board MS Memory System + Message Store + MOD Module + Modulus Microsecond + MODEM Modulator/Demodulator Microsoft Corporation + Millisecond MOHLL Machine Oriented High Level Language MSACM Microsoft Audio Compression Manager MOLAP Multidimensional On-Line Analytical [Microsoft] Processing MSAU Multi-Station Access Unit MOM Manufacturing Operations Management + MSAV Microsoft Anti Virus [Microsoft] Message-Oriented Middleware + MSB Most Significant Bit Microsoft Office/Operations Manager MSBF Mean Swaps Between Failures [Microsoft] MSC Mobile Switching Center MONET Multiwavelength Optical Networking MSCDEX Microsoft Compact Disc Extensions MONO Monaural [Microsoft] MOO MUD, Object Oriented [Internet] MSCE Microsoft Certified Software Engineer MOP Maintenance Operations Protocol [Microsoft] MOPS Million Operations Per Second MSCHAP Microsoft Challenge Handshake MOS Magneto-Optic Storage + Mean Opinion Authentication Score + Protocol [Microsoft] Metal Oxide Semiconductor MSCL Microsoft Community License MOSFET Metal Oxide Semiconductor Field [Microsoft] Effect Transistor MSCS Microsoft Cluster Server [Microsoft] MOSPF Multicast Open Shortest Path First MSD Mass Storage Device + Most MOTD Message Of The Day Significant Digit + MOV Metal Oxide Varistor + Move Microsoft System Diagnostics MOVS Move String [Microsoft] MP Massively Parallel (processing) + MSDE Microsoft Data Engine [Microsoft1) Megapixel + MSDN Microsoft Developer Network Multiple Processors [Microsoft] MP3 MPEG Audio Layer 3 MS-DOS Microsoft - Disk Operating System .MPA Memo Pad Archive (file name [Microsoft] extension) [Palm] MSDR Multiplexed Streaming Data Request MPC Multimedia Personal Computer + MSDS Microsoft Developer Support Multipath Channel [Microsoft] MSFR Minimum Security Function Requirements [IBM] MSG Message .MSG Program Message (file name extension) MSGINA Microsoft Graphical Identification and Authentication [Microsoft] MSI Medium Scale Integration MSIE Microsoft Internet Explorer [Microsoft] MSIMN Microsoft Internet Mail and News [Microsoft] MSL Map Specification Library + Master Subsidy Lockcode + Mirrored Server Link MSLU Microsoft Layer for Unicode [Microsoft] MSMQ Microsoft Message Queue-Server [Microsoft] MSN Microsoft Network [Microsoft] MSO Multiple Service/Systems Operator .MSP Microsoft Paint (file name extension) [Microsoft] MSPL Microsoft Permissive License [Microsoft] MSQL Mini SQL MSR Microsoft Reserved Partition [Microsoft] MSRL Microsoft Reference License [Microsoft] MSRP Manufacturer Suggested Retail Price MSS Mass Storage System + Multiprotocol Switched Services [IBM] MSTS Microsoft Terminal Server [Microsoft] MSW Machine Status Word MSXML Microsoft XML [Microsoft] MTA Mail Transport Agent + Message Transfer Agent + Multimedia Terminal Adapter + Multiple Terminal Access + Multithreaded Architecture MTBB Mean Time Between Breakdowns MTBF Mean Time Between Failures MTBJ Mean Time Between Jams MTF Microsoft Tape Format [Microsoft] + Modulation Transfer Function MTH Memory Translator Hub MTOM Message Transformation Optimization Mechanism MTRP Maximum Transfer Rate Performance MTS Message Transfer Service/System + Microsoft Transaction Server [Microsoft] + Mobile Telephone Sysem + Multichannel Television Sound MTSO Mobile Telephone Switching Office MTST Magnetic Tape Selectric Typewriter [IBM] MTT Multi-Transaction Timer MTTD Mean Time To Diagnose MTTF Mean Time To Failure MTTR Mean Time To Repair MTU Maximum Transfer/Transmission Unit MUA Mail User Agent MUD Multi-User Dialogue/Dimension/Domain/Dungeon [Internet] MUG Multiuser Game MUI Multilingual User Interface [Microsoft] MUL MULTICS Service MUMPS Utility Language) MUSE .MUSEUM MUSIC MUT MUX mV MVB MVC MVD MVDM MVGA MVIP MVP MVS MVT number of MX MXS MZR Multiply Multiplexed Information and Computing Massachusetts General Hospital Multi-Programming System (Programming Multi-User Shared Environment Museums (Domain Name) [Internet] Multiparty Multimedia Session Control Monitor Under Test Multiplexer Millivolt Multimedia Viewer Book Multimedia Viewer Compiler Multivalued Dependencies Multiple Virtual DOS Machines Monochrome Video Graphics Array Multi-Vendor Integration Protocol Multimedia Video Processor Multiple Virtual Storage Multiprogramming with a Variable Tasks Mail Exchanger [Internet] Microsoft Exchange Server [Microsoft] Multiple Zone Recording N... | TOP | UP to M | DN to O | BOTTOM | NAC Network Adapter Card NACD National Association of Computer Dealers NACS National Advisory Committee on Semiconductors NAE Not Above or Equal NAK Negative Acknowledgment NAKA Not Acknowledge NAL Novell Application Launcher [Novell] NAM Number Assignment Module .NAME Names-Individuals (Domain Name) [Internet] NAMPS Narrow-Band Analog Mobile Phone Service [Motorola] NAND Not And NANO One thousand-millionth NANOMETER One billionith of a meter NAP Network Access Point NAPLPS North American Presentation Level Protocol Syntax (graphics) NAS Network Access Server + Network Application Support [DEC] + Network Attached Storage NASA National Aeronautics and Space Administration NASDAQ National Association of Securities Dealers Automatic Quotation NASI NetWare Asynchronous Services Interface [Novell] NASIRC NASA Automated Systems Internet Response Capability NASKER NASA Ames Kernel (benchmark) NAT Network Address Transformation/Translation NAU Network Addressable Unit NAV Navigator NAVSTAR Navigation Satellite Timing and Ranging NAWS Negotiate About Window Size NBE Not Below or Equal NBI Nothing But Initials NBMA Non-Broadcast Multi Access NBS Narrowband Socket + National Bureau of Standards + Numeric Backspace NC Network Computer + No Carry + Numerical Control NCA Network Communications Adapter + Network Computing Architecture [Oracle] NCC Network Control Center NCD Network Computing Device .NCF Netware Command File [Novell] NCGA National Computer Graphics Association NCIC National Crime Information Center NCMT * Numerical Control for Machine Tools NCOS Network Computer Operating System NCP NetWare Core Protocol + Not Copy Protected + Network Control Panel/Processor/Program/Protocol NCR National Cash Register (Company) NCSA National Center for Supercomputing Applications NCSC National Computer Security Center NCSI Network Communications Services Interface [Network Products Corp.] NDB Non-Directional Beacon NDDK Network Device Development Kid [Microsoft] NDEF Not to be Defined NDIS Network Device/Driver Interface Specification NDL Network Data Language NDMP Network Data Management Protocol NDN Non-Delivery Notice NDP Numeric Data Processor NDR Network Data Representation NDRO Non-Destructive Read Out NDS NetWare Directory Service [Novell] .NDX Index (file name extension) NEC Nippon Electric Company NED NASA Extragalactic Database [NASA] NEG Negative + Negate NEMA National Electrical Manufacturers Association NEP Network Entry Point NES National Education Supercomputer NEST Novell Embedded Systems Technology [Novell] .NET Networks (Domain Name) [Internet] NetBIOS Network Basic Input/Output System [IBM] NetBEUI NetBIOS Extended User Interface [IBM] NETMON Network Monitor .NEW New Information (file name extension) NEWS NetWare Early Warning System [Frye Computer] + Network Extensible Window System NEWS. Current events [USENET Newsgroup Category] NEXT Near-End Crosstalk NFF No Fault Found NFS NG NGE NGI NHC NHR NHRP N/I NIA NIC + Network File System [Sun] No Good Not Greater or Equal Next-Generation Internet National Hurricane Center National Handwriting Recognition Next Hop Resolution Protocol Non-Interlaced Next Instruction Address Network Information Center [Internet] Network Interface Card + Numeric Intensive Computing NICAD Nickel-Cadmium NICOLAS Network Information Center OnLine Aid System [NASA] NID New Interactive Display [NEC] + Next ID NIDS Network Intrusion Detection System [Unisys] NII National Information Infrastructure NIM Network Installation Management [IBM] NIMH (NiMH) Nickel-Metal Hydride NIO Native Input/Output + New Input/Output NIPS Network I/Os Per Second NIR Network Information Retrieval NIS Network Information Service [Unix] N-ISDN Narrowband ISDN + National ISDN NISO National Information Standards Organization NISP Networked Information Services Project NIST National Institute for Standards and Technology NITC National Information Technology Center NIU Network Interface Unit NJE Network Job Entry (protocol) [IBM] NL New Line NLB Network Load Balancing [Microsoft] NLE Not Less or Equal NLM NetWare Loadable Module [Netware] NLP Natural-Language Processing NLQ Near Letter Quality NLSFUNC National Language Support Function NLV National Language Version [IBM] NMI Non-Maskable Interrupt NMM NetWare Management Map [NetWare] NMOS Negative Channel Metal-Oxide Semiconductor NMP Network Management Protocol [AT&T] NMS Network Management System [Novell] NN Network Node + No News [Internet] NNI Network to Network Interface NNM Network Node Manager NNTP Network News Transfer Protocol [Internet] NOAA National Oceanic Atmospheric Administration NOC Network Operations Center .NOM Individual with Personal Site (Domain Name) [Internet] NOP No Operation NOPAC Network OPAC NOR Not Or NOS Network Operating System NPA Network Printer Alliance + Numbering Plan Area NPI Network Printer Interface NPL Nonprocedural Language NPN Negative Positive Negative (bipolar transistor) NPS Novell Productivity Specialist [Novell] NPT Non-Programmable Terminal NPTN National Public Telecomputing Network NPU Natural Processing Unit NPX Numeric Processor Extension NQS Network Queuing System [Cray] N(r) Number Returned NRC National Research Council (Canada) NREN National Research and Education Network NRM Network Resource Manager + Normal Response Mode NRZ Not Return to Zero NRZI Non Return to Zero Inverted NS Nanosecond (one-billionth of a second) + National Semiconductor (as in Ns16550 UART) + Network Supervisor + Non Stop NSAP Network Service Access Point NSAPI Netscape Server API [Netscape] NSA POLY National Security Agency Polygraph NSERC National Sciences and Engineering Research Council (Canada) NSF National Science Foundation NSFNET National Science Foundation Network NSI NASA Science Internet NSLOOKUP Name Server Lookup [Unix] NSM Netscape Server Manager [Netscape] NSP Native Signal Processing [Intel] + Network Service Provider NSSC NASA Standard Spacecraft Computer NSTC National Science and Technology Council NSTL National Software Testing Labs NT New Technology [Microsoft] NT-1 Network Terminator Type 1 NTAS NT Advanced Server [Microsoft] NTF No Trouble Found NTFS New Technology File System [Microsoft] NTIA National Telecommunications and Information Administration NTIS National Technical Information Service NTLDR New Technology Loaders [Microsoft] NTP Network Time Protocol NTRAS NT Remote Access Services [Microsoft] NTSA NetWare Telephony Services Architecture [Novell] NTSC National Television Standards Committee NTU Network Termination Unit NUI Network User Identification + Network User Interface + Notebook User Interface [Go Corporation] NUL Null + (dummy device) + (no device) NUMA Non-Uniform Memory Access NV No Overflow NVM Non-Volatile Memory NVOD Near-Video On Demand NVP Nominal Velocity of Propagation NVRAM Non-Volatile Random Access Memory NVT NWS NYM Network Virtual Terminal + Novell Virtual Terminal [Novell] NetWare Web Server [Netware] Anonymous O... | TOP | UP to N | DN to P | BOTTOM | OAB OAD OAG Guide OAI OAS OASIS One-to-All Broadcast Open Architecture Driver [Bernoulli] Official Airline Guide + Online Air Open Applications Interface One-to-All Scatter Organization for the Advancement of Structured Information Standards On Board Diagnostics Object Exchange [Borland] Object Optical Carrier Open Collaborative Environment OBD OBEX OBJ OC OCE [Apple] OCF Objects Components Framework [Borland] OCL Object Constaint Language + Operation Control Language + Operator Control Language OCR Optical Character Recognition OCS On-Card Sequencer OCSP Online Certificate Status Protocol OCX OLE Custom Control ODA Open Document Architecture ODAPI Open Database Application Programming Interface [Borland] ODBC Object-Oriented Database Connectivity + Open Database Computing + Open Data Base Connectivity [Microsoft] ODBMS Object-Oriented Database Management System (also see OODMS) ODI Open Datalink Interface [Novell] + Open Device Interconnect [NetWare] ODIF Open Document Interchange Format ODL Object Definition Language ODM Object Data Manager [IBM] + Optimized Distribution Model [Compaq] ODMA Open Document Management API ODP Open Distributed Processing ODS Open Data Services [Microsoft] + Operational Data Store ODSI Open Directory Service Interface [Microsoft] ODT Open Desktop OEL Organic Electroluminescent (display) OEM Original Equipment Manufacturer OEP Operand Execution Pipeline OF Overflow Flag OFB Output Feedback (mode) OFDM Orthogonal Frequency Division Multiplexing OFMT Output Format for Numbers OFS Object File System [Microsoft] + Output Field Separator OFX Open Financial Exchange OGSA OGSI OH OHCI OID OIDL OIS Open Grid Services Architecture Open Grid Services Infrastructure Off Hook Open Host Controller Interface Object Identifier Object Interface Definition Language Office Information System + Optical Image Stabilizer OLAP Online Analytical Processing OLCP Online Complex Processing .OLD Old version (file name extension) OLE Object Linking and Embedding [Microsoft] OLED Organic Light Emitting Diode OLGA Online Guitar Archive OLI Optical Line Interface [AT&T] OLMC Output Logic Macrocell OLSP Online Service Provider OLTP Online Transaction Processing OM Object Manager OMA Object Management Architecture [Microsoft] OME Open Messaging Environment (protocol) OMF Object Module Format [Microsoft] + Open Media Framework + Open Message Format OMG Object Management Group OMI Open Messaging Interface [Lotus] OML Object Manipulation Language OMR Optical Mark Recognition ONC Open Network Computing [Sun] ONDS Open Network Distribution Services [IBM] ONE Open Network Environment [Netscape] ONMS Open Network Management System ONU Optical Network Unit OOAD Object-Oriented Analysis and Design OOB Out Of Band OODB Object-Oriented Database OODMS Object-Oriented Database Management System (also see ODBMS) OOL Object-Oriented Language OOOS Object-Oriented Operating System OOPL Object-Oriented Programming Language OOPS Object Oriented Programming and Systems OOS Object-Oriented Systems + Off-line Operating Simulator OOT Object-Oriented Technology OOUI Object Oriented User Interface OP Operation + Optical + Output OPAC Online Public Access Catalog [Internet] OPC Open Process Control + Organic/Optical Photoconductor OPCODE Operational Code OPD Operand OPI Open Prepress Interface OPM Operations Per Minute OPS Open Profiling Standard + Oracle Parallel Server [Oracle] OPT Open Protocol Technology .OPT Options (file name extension) OPUS Octal Program Updating System OQL Object Query Language ORACLE On-Line Inquiry and Report Generator (UNIX DB program) ORB Object Request Broker [Microsoft] ORDVAC * Ordnance Variable Automatic Computer .ORG Non-Profit Organizations (Domain name) [Internet] ORI Online Retrieval Interface .ORI Original (file name extension) ORL Optical Return Loss OROM Optical Read-Only Memory ORS Output Record Separator OS Operating System OS/2 Operating System/2 [IBM] OSA Open Scripting/System Architecture OSCAR Open Source Cluster Application Resources OSD On Screen Display + Open Software Description/Distribution OSE Office Server Extensions [Microsoft] OS/E Operating System/Environment OSF Open Software Foundation OSGI (OSGi) Open Services Gateway Initiative OSI Open Systems Interconnection OSINT Open Source Intelligence OSM Off-Screen Model OSP On-Screen Programming + Optical Storage Processor OSPF Open Shortest Path First OSQL Object Structured Query Language OSR2 OEM Service Release 2 [Microsoft] OSS Open Source Software OT Object Technology OTA Operation-Triggered Architecture + Over The Air OTDR Optical Time Domain Reflectometer OTF Open Token Foundation OTI Object Technology International [IBM] OTP One-Time Programmable OUI Organizational Unique Identifier OURS Open Users Recommended Solutions .OUT Outlines (file name extension) OUTS Output String OV Overflow OVAL Object-Based Virtual Application Language [Psion] + Open Vulnerability Assessment Language [US-CERT] .OVL Program Overlay (file name extension) .OVR Program Overlay (file name extension) OWA Outlook Web Access [Microsoft] OWL Object/Open Windows Library [Borland] P... | TOP | UP to O | DN to Q | BOTTOM | P3P Platform for Privacy Preferences Project PAB Personal Address Book PABX Private Automatic Branch Exchange PACE Priority Access Control Enabled [3Com] PACS Picture Archiving and Communication System PACS-L Public Access Computer Systems List [Internet] PAD Packet Assembler/Disassembler + Portable Application Description PADS Pen Application Development System [Slate Corporation] System [IBM] PAIH Public-Access Internet Host PCEB PCI to EISA Bridge [Intel] [Internet] PCI Peripheral Component PAIS Public-Access Internet Site Interconnect/Interface [Internet] PCIC PC-Card Interrupt Controller .PAK Packed (compressed file name PCIE PCI Express (slot) extension) [NoGate PC-I/O Program Controlled I/O Consulting] PCL Printer Command Language [HP] + PAL Paradox Applications Language Process Control Language [Borland] + PCM Personal Computer Manufacturer + Phase Alternating Line + Portable Printer Cartridge Metric [HP] + Audio Laboratory + Pulse Code Modulation Programmed Array Logic + Programming PCMA Paired Carrier Multiple Access Assembly Language PCMC PCI, Cache, Memory Controller [Intel] Programming Assembly Language PCMCIA Personal Computer Memory Card .PAL Palette (file name extension) International Association PALC Plasma-Addressed Liquid Crystal PCMIM Personal Computer Media Interface (display) Module PALS Principles of the Alphabet Literacy PCN Personal Computer Network System PCNFS Personal Computer Network File System PAM Pluggable Authentication Module PCO Point of Control and Observation (library) + PCS Patchable Control Store + Pulse Amplitude Modulation Personal Communication PAN Personal Area Network [GTE] Services/System + PAP Packet-level Procedure + Personal Conferencing Specification + Password Authentication Protocol + Planning Control Sheet + Print Picture And Picture + Contrast Signal + Push Access Protocol + Printer Access Process Control Systems + Program Protocol Counter Store + PAR Personal Animation Recorder + Project Control System Parallel PCT Private Communications Technology + PARA Paragraph Program Control Table PARC Palo Alto Research Center [XEROX] .PCT Picture (file name extension) PA-RISC Precision Architecture-RISC [HP] .PCX PC Paintbrush/Picture Image (file .PAS PASCAL source code (file name name extensions) extension) PD Phase-Change Dual + Public Domain PASCAL (Programming Language named for PDA Personal Digital Assistant Blaise Pascal) .PDB Palm Database (file name extension) + PAT Port Address Translation Program Database (file name .PAT Patch + Pattern (file name extension) extensions) PDC Primary Domain Controller PATA Parallel Advanced Technology PDD Physical Device Driver + Portable Attachment Digital Document PATN Promotional Port Access Telephone PDF Package Definition File + Portable Number Document Format + PAUSE Perl Automatic Upload Server Portable Document File + Processor PAX Portable Archive Exchange [Unix] Defined Function + PB Petabyte (1,024 terabytes) Program Development Facility (One Million Billion characters of .PDF Printer Description (file name information) extension)[Borland,Lotus] PBA Printed Board Assembly PDH Plesiosynchronous Digital Hierarchy PBC Plain-Text Block Chaining PDIAL Public Dialup Internet Access List PBE Prompt By Example [Internet] PBGA Plastic Ball Grid Array PDL Page Description Language + Program PBP Picture-By-Picture Description Language PBR Policy-Based Routing [Cisco] + Program Design Language PBT Provider Backbone Transport PDM Product Data Management PBX Private Branch Exchange PDN Public Data Network PC Personal Computer + Printed Circuit + PDO Portable Distributed Objects [Next] Program Counter PDP Parallel Data Processing + Plasma PCACIAS Personal Computer Automated Display Panel + Calibration Interval Programmable Data Processor + Analysis System (DEC Computer System Designation, PCB Printed Circuit Board + Program i.e. PDP-8, PDP-11) Control Block PDS Packet Driver Specification + PCBC Plain/Propagating Cipher Block Partitioned Data Set + Chaining Planetary Data System + Portable PCC Proof Carrying Code Document Software + PCD Photo Compact Disk Processor Direct Slot [Macintosh] PC-DOS Personal Computer - Disk Operating PDSN Packet Data Serving Node PDSS PDT PDU Data Unit .PDX Paradox files (file name extension) [Borland] + Printer Description Extension (file name extension) PE Parity Even + Processing Element + Protect Enable PEA Pocket Ethernet Adapter PEB Personal Electronic Ballot P4EE Pentium 4 Extreme Edition [Intel] PEL Picture Element [IBM] PEM Privacy-Enhanced Mail [Internet] PEN SDK Pen Computing Software Development Kit PEP Packet Exchange Protocol + Packetized Ensemble Protocol [Telebit] PERC Power Edge RAID Controller PERL Practical Extraction and Report Language [Unix] PERT Program Evaluation and Review Technique PES Positioning Error Signal + Processor Enhancement Socket Processor Upgrade Socket PET Print Enhancement Technology [Compaq] .PFB Printer Font Binary (file name extension) PFE Programmer's File Editor .PFM Printer Font Metrics (file name extension) [Windows] PFN Page Frame Number PFR Portable Font Resource + Power-Fail Restart PGA Pin Grid Array + Professional Graphics Adapter [IBM] PGC Program Group Control [Microsoft] PGDN Page Down .PGL Graphics (file name extension) [Hewlett-Packard] PGM Program PGML Precision Graphics Markup Language PGP Pretty Good Privacy (name of encryption program) .PGP ProGram Parameter (file name extension) [AutoCAD] PGUP Page Up PHF Perfect Hash Function PHIGS Programmers' Hierarchical Interactive Graphics Standards .PHO Phone List (file name extension) PHP Personal Home Pages (original name of this programming language, now known as PHP Hypertext Preprocessor) PHS Personal Handyphone System PI Program Interruption PIA Peripheral Interface Adapter PIC Personal Information Carrier + Personal Intelligent Communicator + Personal Internet Communicator + Platform for Internet Content + Priority Interrupt Controller + Program Interrupt Controller PICS Platform for Internet Content Post Development and Software Support Performance Diagnostic Tool [IBM] + Programmable Drive Table Plug Distribution Unit + Protocol Selection PICT PID Interface [W3C] Picture Packet Identifier + Physical Device + Process Identification Number + Product ID + Proportional, Integral, Derivative PIER Procedures for Internet/Enterprise Renumbering PIF Picture Interchange Format File + Program Information File PII Program Integrated Information PILOT Programmed Inquiry Learning Or Teaching PilotACE* Pilot Automatic Computing Engine PIM Personal Information Manager + Primary Interface Module + Protocol-Independent Multicast PIN Personal Identification Number + Process Identification Number [Unix] PINE Pine Is Not Elm (original usage) + Program for Internet News & Email (present usage) PING Packet Internet Groper PIO Parallel Input/Output + Processor Input/Output + Programmed Input/Output PIP Pattern and Information Processing + Personal Identity Provider + Personal Information Portal + Picture-In-Picture + Problem Isolation Procedure + Programmable Interconnect Point PIPO Parallel In, Parallel Out PIR Protocol Independent Routing PIT Programmable Interval Timer PIXEL Picture Element PJPEG Progressive JPEG PK Pack + Primary Key PKC Public Key Cryptography PKE Public Key Enabled PKI Public Key Infrastructure PL Plus .PL Perl Language (file name extension) PLA Programmable Logic-Array PLATO Programmed Logic for Automatic Teaching Operations PLC Power Line Communications + Programmable Logic Controller PLCC Plastic Leadless Chip Carrier PLD Programmable Logic Device PLDS Pilot Land Data System [NASA] PLL Phase Locked Loop .PLL Prelinked Library (file name extension) [Clipper] PL/M Programming Language for Micros PLMN Public Land Mobile Network PLS Primary Link Station PLSQL Procedural Language-Extensions to SQL (Oracle) PLU Primary Logical Unit PLV Production Level Video PL/1 * Programming Language One PM Presentation Manager [IBM] + Preventative Maintenance + Process Manager .PM6 PagerMaker6 (file name extension) [Corel] P-MAIL Paper Mail PMD Packet Mode Data PMMU Paged Memory Management Unit PMOS Positive Channel Metal Oxide Semiconductor PMP Personal Media Player + Portable Multimedia Player PMR Problem Management Report [IBM] PMU Performance Monitoring Unit PMS Policy Management System PN Processing Node P/N: Part Number PNA Programmable Network Access PND Position Navigation Device PNG Portable Network Graphics PNNI Private Network-to-Network Interface PNP Plug And Play + Positive Negative Positive (bipolar transistor) PNP-X Plug And Play Extensions PO Parity Odd POA Portable Object Adapter POC Point Of Contact POC-IT Point Of Care-Information Technology [Johns Hopkins] POD Piece Of Data + Plain Old Documentation [Perl] + Plain Old Dos + Publishing On Demand POE Power Open Environment POH Power-On Hours POI Point Of Interest POL Problem Oriented Language POP Picture-Outside-Picture + Point Of Presence + Pop from Stack + Post Office Protocol POP3 Post Office Protocol, Version 3 POPA Pop All Registers POPF Pop Flags POR Power-On-Reset POS Packet Over Sonet + Point of Sale + Positive + Programmable Object Select POSE Palm Operating System Emulator POSIX Portable Operating System Interface for Unix POST Power-On Self Test POSTNET Postal Numeric Encoding Technique (bar code) POTS Plain Old Telephone Service + Plain Old Time-Sharing POWER Performance Optimization with Enhanced RISC [IBM] PowerPC Performance Optimization with Enhanced RISC-Performance Computing PP Parallel Port P2P Peer To Peer + People To People P3P Platform for Privacy Preferences PPA Pixel Processing Accelerator .PPD PostScript Printer Description (file name extension) PPDS Personal Printer Data Stream [IBM] PPGA Plastic Pin Grid Array PPI Precise Pixel Interpolation PPM Pages Per Minute PPML Personalized Print Markup Language PPP Point-to-Point Protocol [Internet] PPPOE (PPPoE) Point-to-Point Protocol Over Ethernet PPS Packets Per Second + Power Personal Systems [IBM] .PPS PowerPoint Show (file name extension) [Microsoft] PPTP Point-to-Point Tunneling Protocol [Microsoft] PPU Place of Primary Use PQA Palm Query Application PQFP Plastic Quad Flat Pack PQO Parallel Query Option PRACSA Public Remote Access Computer Standards Association PRAM Parallel Random-Access Machine + Parameter Random Access Memory .PRC Pilot Resource (file name extension) [Palm Pilot] .PRD Printer Driver (file name extension) [Microsoft] PRE Preformatted [HTML] PREP Power PC Reference Platform [IBM/Motorola] PRF Pulse Repetition Frequency .PRF Preferences (file name extension) [Grammatik IV] .PRG Program (file name extension) PRI Primary-Rate Interface PRINTF Print with Formatting [C Programming Language] PRISM Photo-Refractive Information Storage Material .PRJ Project (file name extension) [Borland] PRMD Private Management Domain [X.400] PRML Partial-Response Maximum-Likelihood .PRO Professionals (Domain Name) [Internet] + Profile (file name extension) PROC Procedure PROFS Professional Office System [IBM] PROG Program + Programmer PROLOG Programming In Logic (Programming Language)(See HLL) PROM Programmable Read Only Memory PRN Printer PRNG Pseudo-Random Number Generation (algorithm) .PRS Printer (file name extension) [WordPerfect] PRTSC Print Screen PS Proportional Spacing .PS PostScript (file name extension) PS/2 Programming System 2 [IBM] PSAPI Presentation Space Application Programming Interface PSC Personal Super Computer + Print Server Command + Product Service Center PSDN Packet-Switched Data Network PSDS Packet-Switched Data Service PSERVER Print Server [NetWare] PSF Permanent Swap File PSID PostScript Image Data PSINET (formerly Performance Systems International) PSK Phase Shift Keying PSM Platform Specific Model + Printing Systems Manager + Print Services Facility [IBM] PSN Packet Switching Network + Processor Serial Number PSP Personal Software Products (group) [IBM] + Play Station Portable [Sony] + Program Segment Prefix PSPDN Packet-Switched Public Data Network PSRAM Pseudo-Static Random Access Memory PSRT PostScript Round Table [GEnie] PSS Process Status Structure PSTN Public Switched Telephone Network PSU Power Supply Unit PSW Program Status Word .ps.Z Compressed PostScript (file name extension) [Unix] PT Page Table P/T Part Time PTD Parallel Transfer Disk Drive PTE Page Table Entry PTF Problem Temporary/Trouble Fix [IBM] PTH Plated Through Hole PTI Packet Type Identifier PTT Postal Telephone & Telegraph + Push To Talk PUB Public (directory) [Internet] + Publish .PUB Publication (file name extension) [Ventura] PUN Physical Unit Number PUP PARC Universal Packet (protocol) + Potentially Unwanted Program PURL Persistent URL PUS Processor Upgrade Socket PUSHA Push All Registers PUSHF Push Flags PVC Permanent Virtual Circuit + Polyvinyl Chloride PVM Parallel Virtual Machine + Pass-through Virtual Machine (protocol) [IBM] PVP Parallel Vector Processing PVR Personal Video Recorder PVS Parallel Visualization Server PVT Position, Velocity, Time PW Password PWB Printed Wire Board + Programmer's Workbench [Microsoft] PWD Print Working Directory [Unix] .PWL Password List (file name extension) PWM Pulse Width Modulation PWR Power PWSCS Programmable Workstation Communication Services [IBM] .PX Primary Index (file name extension) [Paradox] .QDT Quicken Data (file name extension) [Intuit] QEMM Quarterdeck Expanded Memory Manager [Quarterdeck Corp.] QFA Quick File Access QFE Quick-Fix Engineering [Microsoft] QFP Quad Flat Pack QIC Quality Information Using Cycle Time [Hewlett-Packard] + Quarter-Inch Cartridge .QIF Quicken Import File/Interchange Format (file name extension) QLLC Qualified Logical Link Control .QMT Quicken Memorized List (file name extension) [Intuit] .QNX Quicken Indexes to Data (file name extension) [Intuit] QOS Quality Of Service QPG Quantum Phase Gate QPSK Quadrature Phase Shift Keying QSAM Queued Sequential Access Method QTC Quicktime Conferencing [Macintosh] QTVR Quicktime Virtual Reality QVGA Quarter Video Graphics Array QWAVE Quality Windows Audio/Video Experience [Microsoft] R... | TOP | UP to Q | DN to S | BOTTOM | RA Remote Assistance + Return Authorization .RA Real Audio (file name extension) RACF Resource Access Control Facility RAD Rapid Application Development RADAR Radio Detection And Ranging + Rights, Availabilities, Distribution Analysis and Reporting [Disney] RADB Routing Arbiter Data Base RADIUS Remote Authentication Dial-In User Service RADSL Rate Adaptive Digital Subscriber Line RAG Row Address Generator RAID Redundant Arrays of Independent Disks + Redundant Arrays of Independent Drives + Redundant Arrays of Inexpensive Disks RAIS Redundant Arrays of Inexpensive Systems RALU Register Arithmetic Logic Unit RAM Random Access Memory .RAM Real Audio Metafile (file name extension) RAMDAC Random Access Memory Digital-toAnalog Converter [Sierra] RAMP Remote Access Maintenance Protocol [Internet] RAN Radio Access Network + Regional Advanced Network RAND Random RAP Rapid Application Prototyping RARP Reverse Address Resolution Protocol Q... | TOP | UP to P | DN to R | BOTTOM | QA Quality Assurance QAM Quadrature Amplitude Modulation QBE Query By Example QBF Query by Form QBIC Query By Image Content [IBM] QBITS Quantum Bits QC Quality Control QD Querty/Dvorak QDA Qualitative Data Analysis QDOS Quick and Dirty Operating System .QDI Quicken Dictionary (file name extension) [Intuit] RAS Random Access Storage + Reader Admission System [British Library] + Reliability, Availability and Serviceability + Remote Access Service + Row Address Select RASAPI Remote Access Service Application Programming Interface [Microsoft] .RAT Rating (file name extension) RAVE Rendering Acceleration Virtual Engine [Apple Computer] .RAW Raw Data (file name extension) RB Right Button (of 2 or 3 button Mouse) RBBS Remote Bulletin Board System RBCS Remote Bar Code System RBOC Regional Bell Operating Company .RC Resource (file name extension) RC1 Release Candidate 1 [Microsoft] RCD Redistribution Control Descriptor RCL Rotate Carry Left RCP Remote Control Panel + Remote Copy [Internet] + Restore Cursor Position + Rich Client Platform RCPT Recipient RCR Rotate Carry Right RCS Records Communications Switching System + Revision Control System [Unix] RD Receive Data + Remove Directory R&D Research and Development RDA Remote Database Access RDB Receive Data Buffer + Relational Database RDBMS Relational Database Management System RDCLK Received Timing Clock RDF Resource Description Framework [W3C] RDIF Radio Frequency Indentification (tag) RDN Relative Distinguished Name RDO Remote Data Object RDP Reliable Datagram Protocol + Remote Desktop Protocol RDR Remote Data Recovery RDRAM Rambus DRAM RDSL (See DSL) RDSR Receiver Data Service Request RDTO Receive Data Transfer Offset [IBM] RDX Realistic Display Mixer .REC Recorder (file name extension) + Recreational or Entertainment Activities (Domain Name) [Internet] REC. Recreation [USENET Newsgroup Category] .REF Reference (file name extension) REG Register REGAL Rigid Epoxy Glass Acrylic Laminate REGEDIT Registry Editor [Microsoft] RELSECT Relative Sector REM Remark + Remote + Ring Error Monitor REN Rename + Ringer Equivalence Number REP Repeat REPE Repeat while Equal REPNE Repeat while Not Equal REPNZ Repeat while Not Zero REPZ Repeat while Zero REQ Request REREG Re-Register RES Remote Execution Service + Reset + Resolution .RES Resource (file name extension) RET Resolution Enhancement Technology [HP] + Return RETR Retrieve REX Relocatable Executable REXEC Remote Execution REXX Restructured Extended Executor (language) [IBM] RF Radio Frequency RFC Request For Comments [Internet] RFD Reduced Function Device + Request for Discussion [Internet] RFI Radio Frequency Interference + Request for Information RFID Radio Frequency Identification RFP Request for Proposal RFQ Request for Quotation RFS Remote File Sharing + Remote File System RFT Reliable File Transfer + Revisable Form Text + Rich Text Format RFU Reserved For Future Use RGB Red-Green-Blue (color model) RI Referential Integrity + Ring Indicate RID Relative Identifier RIFF Resource Interchange File Format [Microsoft] RIM Remote Installation and Maintenance [Microsoft] + Research In Motion (company) + Ring Indicator Monitor RIME RelayNet International Message Exchange RIP Raster Image Processor + Remote Imaging Protocol + Routing Information Protocol [Novell] RIPEM Riordan's Internet Privacy Enhanced Mail RIPS Raster Image Processing System RISC Reduced Instruction Set Computing RIT Raw Input Thread [Microsoft] RJE Remote Job Entry RLD Received Line Detect RLE Run Length Encoded RLL Run Length Limited RLN Remote LAN Node [DCA] RLOGIN Remote Login RLSD Received Line Signal Detected RLSI * Ridiculously Large-Scale Integration RM Reset Mode RMA Return Material Authorization + Return to Manufacturer Authorization RMB Right Mouse Button RMC Raptor Management Console [Symantec] RMDIR Remove Directory RMI Remote Messaging Interface + Remote Method Invocation [Sun] RMON Remote Monitor/Monitoring RMP Remote Maintenance Processor [IBM] RMS Record Management Services + Root Mean Square RMW Read-Modify-Write RN Read News [Internet] RNA Remote Network Access [Microsoft] RNC Radio Network Controller RND Random RNG Random Number Generator RNP Regional Network Provider R-O Read Only ROB Reorder Buffer [Intel] ROI Return On Investment ROL Rotate Left ROLAP Relational On-Line Analytical Processing ROM Read Only Memory ROOM Real-Time Object-Oriented Modeling ROP Raster Operation + RISC Operation ROPES Rapid Object-Oriented Process for Embedded Systems ROR Rotate Right ROS Read-Only Storage [IBM] ROSCOE Remote Operating System Conversational Online Environment ROT Running Object Table RPC Remote Procedure Call RPE Remote Program Execution RPG Report Program Generator (Programming Language) RPL Resident Programming Language + Requested Privilege Level RPM Revolutions Per Minute RPN Real Page Number + Reverse Polish Notation RPRINTER Remote Printer [NetWare] RPPROM Reprogrammable PROM RPR Relative Performance Rating RPT Repeat RPQ Request for Price Quotation RQBE Relational Query By Example [Fox Pro] RR Real Reality RRP Recommended Retail Price RS Radio Shack + Recommended Standard (as in RS-232) [EIA] + Record Separator + Request to Send RSA Rural Service Area RSA129 (129 digit cryptographic security number named after its inventors: Drs. Ronald L. Rivest, Adi Shamir and Leonard M. Adleman) RSAC Recreational Software Advisory Council RSCS Remote Spooling Communications System RSD Route Server Daemon RSH Remote Shell RSI Repetitive Strain Injury (Carpal Tunnel Syndrome) RSL Request-and-Status Link RSP Required Space Character + Response RSPX Remote Sequenced Packet Exchange RSS Really Simple Syndication + Reduced Space Symbology + RDF Site Summary + Rich Site Summary RSSI Received Signal Strength Indicator RST Reset + Restart RSTS Resource Sharing Time Sharing [Digital] RSVP Resource Reservation Protocol RSX Realistic Sound Experience + Real Time Resource Sharing Executive RT Real Time + RISC Technology + Run Time R/T Receive/Transmit RTAM Remote Terminal Access Method RTC Real-Time Clock RTCP RTDM RTEL RTF RTI RTL Real-Time Control Protocol Real-Time Data Migration Reverse Telnet [Internet] Rich Text Format Run Time Infrastructure Raster Transfer Language + Register Transfer Language/Level + Resistor Transistor Logic + Right-To- Left + Run Time Library RTM Release To Manufacturer + Response Time Monitor + Runtime Manager [Borland] RTMP Routing Table Maintenance Protocol RTN Reuters Transaction Network RTOS Real-Time Operating System RTP Rapid Transport Protocol + Real Time Protocol + Real-Time Transport Protocol RTS Remote Takeover System + Ready/Request To Send RTSP Real-Time Streaming Protocol RTTI Runtime Type Identification/Information RTTY Radio Teletypewriter (Communications) RTV Real Time Video RTX Run Time Extension RUN Rewind/Unload [IBM] RUP Rational Unified Process [IBM] RVA Relative Virtual Address RVI Reverse Interrupt R/W Read/Write RWIN Receive Window RWM Read-Write Memory RX Receiver RXD Receive Data S... | TOP | UP to R | DN to T | BOTTOM | SA Selective Availability SAA Systems Application Architecture [IBM] SAAS Software As A Service SABRE Semi-Automatic Business Research Environment SAC Single Attachment Concentrator SACD Super Audio Compact Disk SACL System Access Control List SADL Synchronous Data Link Control [RacalVadic] SAINT * Symbolic Automatic Integrator SAL Shift Arithmetic Left + Spatial Aggregation Language + Systen Abstraction Layer SALT Speech Application Language Tags SAM Serial Access Memory + Sequential Access Method + Security Accounts Manager [Microsoft] + Single Application Mode [Microsoft] SAMI Synchronized Accessible Media Interchange SAML Security Assertion Markup Language SAN Storage/System Area Network SANE Standard Apple Numeric Environment SAP Second Audio Program + Service Access Point [DEC] + Session Announcement Protocol + Service Advertising Protocol + * Symbolic Assembly Program + Systems, Applications and Products (company) [SAP] SAPI Speech Application Program Interface [Microsoft] SAR Segmentation and Reassembly + Shift Arithmetic Right + Specific Absorption Rate Successive Approximation Register + Synthetic Aperature Radar SARG Search Argument SARS Severe Acute Respiratory Syndrome (virus) SAS Sales Accounting System + Serial Attached SCSI + Single Attached Station + Single Audio System + Statistical Analysis System SASI Shugart Associates System Interface (SCSI originated from SASI) SATA Serial Advanced Technology Attachment SATAN Security Administrator Tool for Analyzing Networks .SAV Saved (file name extension) SAVDM Single Application VDM SAX Simple API for XML SB Sound Blaster [Creative Labs] + Sound Board SBA Scene Balance Algorithms [Kodak] + Service Based Architecture SBAS Satellite Based Augmentation System SBB Subtract With Borrow SBC Single-Board Computer SBCS Single-Byte Character Set SBI Sound Blaster Instrument .SBR Source Browser (file name extension) [Borland] SBS Small Business Server + Smart Battery Specification [Duracell/Intel] .SC Script (file name extension) SCA Scalable Computing Architecture [HP] + Service Component Architecture SCADA Supervisory Control and Data Acquisition SCAM SCSI Configuration Automatically SCAS Scan String SCB Subsystem Control Block [IBM] SCC Serial Communications Controllers + Serial Controller Chip + Synchronous Channel Check [IBM] SCCP Simple Conference Control Protocol SCCS Source Code Control System SCD Standard Color Display S-CDMA Synchronous Code-Division Multiple Access SCF System Control Facility SCI Scalable Coherent Interface + Serial Communications Interface SCI. Science [USENET Newsgroup Category] SCIL Serial Control Interface Logic SCLM Software Configuration and Library Management [IBM] SCM Service Control Manager + ScreenCam Format [Lotus] + Software Configuration Management + Station Class Mark + Supply Chain Management SCO Santa Cruz Operation (Software Company) + Synchronous Connection-Oriented (link) SCOPE Simple Communications Programming Environment [Hayes] SCP Save Cursor Position + Subsystem Control Port + System Control Program SCR Silicon Controlled Rectifier .SCR Script (file name extension) SCRAM Software Configuration, Release and Management SCRAMJET Supersonic Combustion Ramjet (engine) SCRN Screen (video display) SCRS Scalable Cluster of RISC Systems SCSA Signal Computing System Architecture [Dialogic] SCSI Small Computer Systems Interface SCTP Stream Control Transmission Protocol SD Send Data + Secure Digital + Super Density SDA Software Delivery Agent [IBM] + Software Disk Array + Source Data Automation + System Display Architecture [Digital] SDAM Single DOS Application Mode SDB Symbolic Debugger [Unix] SDD Software Description Database [Internet] + Subscriber Data Document + System Distribution Directory SDF Space Delimited File + Space Delimited Format .SDF Standard Data Format (file name extension) SDH Synchronous Digital Hierarchy SDI Selective Dissemination of Information + Single Document Interface Software Development Interface [Mosaic] SDIO Secure Digital Input/Output SDK Software Development Kit [Microsoft] SDL Specification and Description Language SDLC Synchronous Data Link Control (protocol) SDLT Super Digital Linear Tape SDM System Development Multitasking SDMI Secure Digital Music Initiative/Interface SDMMC Secure Digital Multi Media Card SDMS SCSI Device Management System [NCR] SDN Software Defined Network [AT&T] SDNS Secure Data Network Service SDO Service Data Objects + Software Delivery Optimization [Borland] SDR Streaming Data Request SDRAM Synchronous DRAM SD-ROM Super Density ROM SDS Sysops Distribution System SDSL (See DSL) SDSM Super Digital Sound Management SD_STB Streaming Data Strobe [IBM] SDTV Standard Definition Television SDV Segment Delay Value + Switched Digital Video [AT&T] SDX Storage Data Acceleration SDXF Structured Data Exchange Format SEA Standard Extended Attribute [OS/2] .SEA Self Extracting Archive (file name extension) [Macintosh] SEAC * Name of first computer to use transistors, built by (National Bureau of) Standards Eastern Automatic Calculator (Also see SWAC) SEAL Segmentation and Reassembly Layer (protocol) + Screening External Access Link [Digital-DEC] SEC Single Error Correction SECAM Sequentiel Couleur Avec Memoire (Sequential Color With Memory) SECC Single Edge Contact Cartridge SED Stream Editor + Stream-Oriented Editor SEG Segment SEH Structured Exception Handling SEL Select SEM Scanning Electron Microscope + Standard Electronic Module + Strategic Enterprise Management [SAP] SEO Search Engine Optimization SEPP Secure Encryption Payment Protocol SER Serial SERCOS Serial Real-Time Communications System SERPS Search Engine Results Page [Google] SET Secure Electronic Transaction + Softwave Engineering Technology .SET Driver Set (file name extension) [Lotus 1-2-3] [LDC] + Image Settings (file name extension) [Paradox] SETEXT Structure Enhanced Text [Internet] SEU Single Event Upset + Smallest Executable Unit SF Sign Flag SFC System File Checker SFD Start Frame Delimiter SFDR Spurious-Free Dynamic Range SFI Software Fault Isolation SFN Short File Name SFQL Structured Full-text Query Language SFS System File Server SFT System Fault Tolerance SFX Self Extracting + Sound Effect(s) SGA Shared Global Area SGCP Simple Gateway Control Protocol SGEN Signal Generator + System Generator SGDT Store Global Descriptor Table SGI Silicon Graphics, Inc. SGM Shaded Graphics Modeling SGML Standard/Structured Generalized Markup Language SGR Set Graphics Rendition SGRAM Synchronous Graphics RAM S/H Sample and Hold SHA Secure Hash Algorithm [NSA] SHAR Shell Archive SHED Segmented Hypergraphic Editor SHG Segmented Hypergraphics SHL Shift Logical Left SHOE Simple HTML Ontology Extension SHR Shift Logical Right SHTML Server-Side Include HyperText Markup Language S-HTTP Secure Hypertext Transfer Protocol SHV Standard High-Volume .SHW Show (file name extension) SI Shift-In + Source Index + System Information + System Integration SIC Standard Industrial Code SID Security Identifier + Serial Input Data + Station Identification [AT&T] + Symbolic Interactive Debugger + System ID SIDF System Independent Data Format SIDH System Identification for Home Systems SIDT Store Interrupt Descriptor Table SIF Standard Input Format SIFT Stanford Information Filtering Tool SIG Special Interest Group SIGCAT Special Interest Group on CD-ROM Applications and Technology SIM Simulator + Subscriber Identity Module SIMCARD Subscriber Identity Module Card SIMD Single Instruction, Multiple Datastream (processor) SIMM Single In-line Memory Module SIMTEL Simulation and Teleprocessing SIMULA Simulation (language) SIO Serial Input/Output (communications driver) SIP Session Initiation Protocol + Single In-line Package SIPC Simply Interactive Personal Computer [Microsoft] SIPO Serial In, Parallel Out SIPP Single In-line Pin Package SIR Serial Infrared [Hewlett-Packard] SIRDS Single-Image Random Dot Stereogram SIS Single-Image Stereogram SISL System Interrupt Steering Logic SISNET Signal In Space Through The Internet SI/SO Serial In/Serial Out + Shift In/Shift Out SIT Special Information Tones .SIT Stuff-It (compressed file name extension) [Macintosh] SIU System Interface Unit SIV System Integrity Verifier SKIP Simple Key-Management for Internet Protocols [Sun] SKU# Stock Keeping Unit Number SLA Service Level Agreement SLB Static Load Balancing SLC Subscriber Line Concentrator SLD Second-Level Domain (name) SLDT Store Local Descriptor Table SLED Single Large Expensive Disk SLI Session Level Interface SLIC System Level Integration Circuit + System Licensed Internal Code [IBM] SLIM Structured Language for Internet Markup SLIP Serial Line Interface Protocol SLM Spatial Light Modulator SNP Serial Number/Password [Omen SLMR Silly Little Mail Reader Technology] SLOSH Sea, Lake and Overland Surge from SNR Signal-to-Noise Ratio Hurricane (program) SNRM Set Normal Response Mode SLOT Scanned Laser Output Terminal SOA Service-Oriented Architecture + Start SLP Service Location Protocol + Super Of Authority Long Play SOAP Simple Object Access Protocol SLR Single Lens Reflex SOC System On a Chip SLSI Super Large-Scale Integration SOC. Social Issues [USENET Newsgroup SLSS Systems Library Subscription Service Category] [IBM] SOCKS Socket Secure (server) [Internet] SLU Secondary Logical Unit + Spoken SO-DIMM Small Outline DIMM Language Understanding SOE Standard Operating Environment SM Set Mode + Shared Memory SOH Start of Header SMA Software Migration Assistant [IBM] SOHO Small Office/Home Office SMART Self-Monitoring Analysis and SOI Silicon-On-Insulator [IBM] Reporting Technology SOIC Small Outline Integrated Circuit SMB Server Message Block (protocol) SOJ Small-Outline J-Lead SMD Surface Mounted Device SOL Simulation Oriented Language SMDR Station Message Detail Recording SOM Start of Message + System Object SMDS Switched Multimedia/Multi-Megabit Model [IBM] Data Service SONAR Sound Navigation and Ranging SME Small & Medium Sized Enterprises SONET Synchronous Optical Network SMF Single Mode Fiber + System Manager SOP Small Outline Package + Standard Facility [Compaq] Operating Procedures SMI System Management Interrupt [Intel] SOS Silicon On Sapphire + Sophisticated SMIF Standard Mechanical Interface Operating System + SMIL Synchronized Multimedia Integration Standards and Open Systems Language SOTA State Of The Art S-MIME Secure MIME SOX Sound Exchange SMIT System Management Interface Tool SP Service Pack [IBM] + Stack Pointer + [IBM] System Product SMK Software Migration Kit [Microsoft] SPA Secure Password Authentication SML Standard Meta Language [Microsoft] + SMM System Management Mode [Intel] Software Publishers Association SMOBC Solder Mask Over Bare Copper SPAN Space Physics Analysis Network SMP Simple Management Protocol + Symbolic SPAP Shiva Password Authentification Manipulation Protocol Program + Symmetrical MultiSPARC Scalable Processor Architecture + Processing + Sun's Palo Alto Research Center Symmetric Multiprocessor SPC Small Peripheral Controller + .SMP Sample (file name extension) Statistical Process Control SMPC Shared Memory Parallel Computer SPCL Spectrum Cellular Corporation SMPS Switching Mode Power Supply SPCS Stored Program Controlled Switch SMRAM System Management Random Access SPD Serial Presence Detect Memory SPE Synergistic Processing Element SMS Short Message Service [Sprint] + SPEC Systems Performance Evaluation Short Messaging System + Cooperative Storage Management Services [NetWare] SPF Sender Policy Framework + Shortest + Path First + Storage Management Subsystem/System + System Programming Facility Systems Management Server [Microsoft] SPGA Staggered Pin-Grid Array SMSW Store Machine Status Word SPI Security Parameters Index + Service SMT Station Management (protocol) + Provider Interface + Surface-Mount Technology SCSI Parallel Interface + Stateful SMTP Simple Mail Transfer Protocol Packet Inspection SMU System Management Utility .SPI Spool (file name extension) SN Serial Number SPID Service Profile/Provider Identifier S/N Signal-to-Noise (Ratio) SPIKE Science Planning Intelligent SNA Systems Network Architecture [IBM] Knowledge-Based SNAP Sub-Network Access Protocol + Environment [STScI] Sub-Network Attachment Point SPIRES Stanford Public Information Retrieval SNAPI Structured N-Dimensional Application System Program [Stanford University] Interface [Oracle] SPKI Simple Public Key Infrastructure SND Sound SPL Software Product Line + Spooler + SNEWS Secure News Server [Internet] Structured Product Labeling SNMP Simple Network Management Protocol [Microsoft] + SNOBOL String Oriented Symbolic Language System Programming Language [HP] (Programming Language) .SPL Spell Checker (file name extension) SPLD SPM SPOOL Line SPOT Simple Programmable Logic Device SSML Speech Synthesis Markup Language System Performance Monitor [IBM] [W3C] Simultaneous Peripheral Operations On SSO Single Sign On SSPI Security Service Provider Interface Shared Product Object Tree [IBM] + [Microsoft] Small Programmable Object Technology SSR Secure Socket Relay [Sun] + SSRP Simple Server Redundancy Protocol Smart Personal Object Technology [Cisco] [Microsoft] SST Spread-Spectrum Technology + SPP Sequenced Packet Protocol + Standard Systems Services and Technology Printer Port STA Spanning Tree Algorithm SPPS Scalable Power Parallel System [IBM] STAR Self Defining Text Archival SPR Special Purpose Register + STAX (StAX) Streaming API for XML Statistical Pattern Recognition + STB Strobe Symmetrical Phase Recording STC Set Carry Flag SPREAD * Systems Programming, Research, STD Set Direction Flag + Standard Engineering STDA StreetTalk Directory Assistance and Development [IBM] [Banyan] SPS Secure Packet Shield + Shock STDAUX Standard Auxilary Protection System + STDERR Standard Error Standby Power System STDIN Standard Input SPSS Statistical Package for the Social STDIO.H Standard Input/Output Header [C Sciences Programming Language] SPT Sectors Per Track STDM Statistical Time Division Multiplexer SPVA Super Patterned Vertical Alignment STDOUT Standard Output SPX Sequenced Packet Exchange [Novell] STDPRN Standard Printer SQ Squeezed (files) STEM Science, Technology, Engineering and SQE Signal Quality Error (test) Math SQL/DS Structured Query Language/Data System STEP Standard for Exchange of Product [IBM] STEREO Solar-Terrestrial Relations SQOS Secure Quality Of Service Observatory [JHUAPL] SQRT Square Root .STF Structured File (file name extension) SR Shift Register [Lotus Agenda] SRAM Shadow Random Access Memory + STI Set Interrupt Flag Static Random Access Memory S/TK Sectors Per Track SRAPI Speech Recognition API STL Standard Template Library SRB Source-Route Bridge STM Scanning Tunneling Microscope SRC System Resource Controller STN Super-Twist Nematic .SRC Source (file name extension) .STORE Businesses Offering Goods (Domain SRD Screen Reader System Name) [Internet] SRDRAM Self-Refreshed DRAM STOS Store String SRGB Sustained RGB (values) STP Secure Transfer Protocol + Shielded SRGS Speech Recognition Grammar Twisted Pair (cable) + Specification [W3C] Signal Transfer Point + SRM Security Reference Monitor Synchronized Transaction Processing SRO Sharable and Read Only STR Store Task Register + Synchronous SRP Suggested Retail Price Transmitter Receiver .SRP Script (file name extension) STRESS Structural Engineering System Solver SRPI Server-Requester Programming (Programming Interface Language) SRQ Service Request STRUDL Structural Design Language SRR Serially Reusable Resource (Programming Language) SRS Sound Retrieval System STScI Space Telescope Science Institute SS Stack Segment + Single Sided + STT Secure Transaction Technology Seconds [Microsoft] SS7 Signaling System 7 [Bellcore] STX Start of Text SSA Serial Storage Architecture .STY Style (file name extension) [Ventura, SSAD Structured System Analysis and Design Word, WordPerfect] SSAP Source Service Access Point SUB Subroutine + Substitute + Subtract SSCP Systems Service Control Point [IBM] SUN Sun Microsystems, Inc. SSD Solid State Disk .SUP Supplemental Dictionary (file name SSEC * Selective Sequence Electronic extension) Calculator [IBM] [WordPerfect] SSGA System Support Gate Array SUPERDARN Super Dual Auroral Radar Network SSH Secure Shell (protocol) [JHUAPL] SSI Server Side Includes + Single System SVC Switched Virtual Circuit Image + SVCD Super Video Compact Disk Small Scale Integration SVF Simple Vector Format SSL Secure Socket Layer SVG Scalable Vector Graphics SSMA Spread Spectrum Multiple Access SVGA Super Video Graphics Array S-VHS S-VIDEO SVM Super VHS Separate Video System Virtual Machine [Microsoft] + System Volume Mangement SVN Switched Virtual Network [IBM] SVR Server SVR# System V Release Number [AT&T] SVTC Secure Videoteleconference S/W Software SWAC * Mobile version of SEAC, built for deployment to White Sands, and named Standards Western Automatic Calculator SWAIS Simple Wide Area Information Server [Internet] SWAP Shared Wireless Access Protocol SWIG Simplified Wrapper and Interface Generator SWISH Simple Web Indexing System for Humans SWP Simple Web Printing .SWP Swap (file name extension) SXGA Super Extended Graphics Array SXRD Silicon Crystal Reflective Display .SYL Syllabus (file name extension) SYLK Symbolic Link .SYM Symbols (file name extension) SYMPL Systems Programming Language .SYN Synonym (file name extension) SYNC Synchronous SYS System .SYS System Configuration (file name extension) + System Device Driver (file name extension) SYSADMIN System Administrator SYSGEN System Generator SYSLOG System Log SYSMOD System Modification SYSOP System Operator SYSREQ System Request SZ Send ZModem [Unix] Access System TASM Turbo Assembler [Borland] TAXI Transparent Asynchronous Transceiver/Receiver Interface TB Terabyte (1,024 gigabytes) (One Thousand Billion characters of information) T/B Top and Bottom TBBS The Bread Board System (BBS) TBGA Tape Ball Grid Array .TBK Toolbook (file name extension) TBS Time-Based Sampling TBU Tape Backup Unit TC Test Control + Transmission Control TCL Tool Command Language TCM Trellis-Coded Modulation TCO Total Cost of Ownership TCP Tape-Carrier Package TCPA Trusted Computing Platform Alliance [Intel] TCP/IP Transmission Control Protocol/Internet Protocol TCT Terminal Control Table TD Transmit Data .TDA To Do Archive (file name extension) [Palm] TDC Tabular Data Control TDD Telecommunications Device for the Deaf + Test Driven Development TDtoDP Tablet Coordinates to Display Coordinates (converting) TDE Terminal Display Editor .TDF Trace Definition File (file name extension) [OS/2] + Typeface Definition File (file name extension) TDI Transport Device Interface TDM Technical Document Management + Time Division Multiplexing TDMA Time Division Multiple Access TDMS Terminal Display Management System TDP Tag Distribution Protocol [Cisco] + Telelocator Data Protocol + Thermal Design Power TDSR Transmitter Data Service Request TDR Time Domain Reflectometry | TOP | UP to S | DN to U | BOTTOM | TE/2 Terminal Emulator/2 [Oberon] TEB Thread Environment Block TAB Tape Automated Bonding TEC Tokyo Electronics Corporation TAC Title, Author, Copyright TED Technology, Entertainment and Design TACS Total Access Communication System + TAD Telephone Answering Device Tiny Editor + Transient TAG Technical Advisory Group Electromagnetic Device TAI International Atomic Time TEI Terminal Endpoint Identifier TAL Typed Assembly Language TELCO Telephone Company TALOSS Three-Dimensional Advanced TEML Turbo Editor Macro Language [Borland] Localization TEMP Temporary Observation Submarine Software TER Thermal Eclipse Reading [Sony] TAO Track At Once TERMPWR Terminator Power TAP Telelocator Alphanumeric Protocol Text File Device Driver TAPCIS The Access Program for the CompuServe TFDD TFEL Thin-Film Electroluminescent Information Service .TFM Tagged Font Metric (file name TAPI Telephony Applications Programming extension) Interface TFT Thin-Film Transistor (screens) .tar Tape Archive (archived file name TFTP Trivial File Transfer Protocol extension) [Unix] Taga Bitmap (file name extension) .tar.Z Compressed Archived files (file name .TGA THD Total Harmonic Distortion extension) [Unix] .THD Thread (file name extension) TAS Telephone Access Server + Total T... THINNET Thin Ethernet THOMAS The (U.S.) House (of Representatives) Open Multimedia Access System THOR Tandy High-Performance Optical Recording THR Transmit Holding Register .THS Thesaurus (file name extension) TI Texas Instruments, Inc. TIA Telecommunications Industry Association + The Internet Adapter [Internet] TIB Tag Information Base TID Target ID + Task Identification TIES Time Independent Escape Sequence .TIF Tagged Image File (filename extension) TIFF Tagged Image File Format TIGA Texas Instruments Graphics Architecture TIGER Topologically Integrated Geographic Encoding and Referencing TIIAP Telecommunications and Information Infrastructure Assistance Program [NII] TIL Tech Info Library [Macintosh] TIM Technical Information Memo [Compaq] TIMED Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics [JHUAPL] TIMEZONES - - - - - - - - - - - - - - - - - GMT Offsets Offsets Eastward from GMT (+) Offsets Westward from GMT (-) AST - Atlantic Standard Time -4:00 AT - Azores Time -2:00 AHD - Alaska-Hawaii Daylight ::: AHS - Alaska-Hawaii Standard -10:00 BLT - Baghdad Local Time +3:00 BST - British Summer Time ::: CAT - Central Alaska Time -10:00 CCT - China Coast Time +8:00 CDT - Central Daylight Time ::: CET - Central European Time +1:00 CLT - Cairo Local Time +2:00 CST - Central Standard Time -6:00 EAD - East Australian Daylight ::: EAS - East Australian Standard +10:00 EDT - Eastern Daylight Time ::: EET - Eastern European Time +1:00 EMT - Eastern Mediterranean +2:00 EST - Eastern Standard Time -5:00 GMT - Greenwich Mean Time +0:00 HST - Hawaii Standard Time -10:00 JST - Japanese Standard Time +9:00 MDT - Mountain Daylight Time ::: MET - Middle European Time +1:00 MST - Mountain Standard Time -7:00 MTS - Moscow Time Standard +3:00 MTD - Moscow Time Daylight ::: NT -11:00 NZT - New Zealand Time +12:00 PDT - Pacific Daylight Time ::: PST - Pacific Standard Time -8:00 PST - Pakistan Standard Time +5:00 WAS - West Australian Standard +7:00 WAT - West Africa Time -1:00 WED - Western Europe Daylight ::: WES - Western Europe Standard +0:00 YDT - Yukon Daylight Time ::: YST - Yukon Standard Time -9:00 IDLE- International Date Line East +12:00 IDLW- International Date Line West -12:00 TIMI Technology Independent Machine Interface [IBM] TIMS Text Information Management Systems TINA Telecommunication Information Networking Architecture TIP Terminal Interface Processor + Transaction Internet Protocol TITOFET Tunneling-In, Tunneling-Out Field Effect Transistor TKIP Temporal Key Integrity Protocol TK/TK Track to Track TLA Three-Letter Acronym TLB Translation Lookaside Buffer .TLB Table (file name extension) TLD Top Level Domain TLI Transport Layer Interface TLS Transport Layer Security TLU Table Lookup .TLX Telex (file name extension) TM Trademark TMDS Transition Minimized Differential Signaling .TML Template (file name extension) TMP Temporary TMS Traffic Management System [BA] TN Twisted Nematic - Nome Time TNC TNEF Format TNO TOAD TOC TOD TOF TOP TOS TPC Council TPF [IBM] TPI TPL TTS Text-To-Speech + Transaction Tracking System TTY Teletype The Netherlands Organization TUCOWS The Ultimate Collection of Winsock Tool for Application Developers Software Table Of Contents TUI Text-Based User Interface Time Of Day [WordPerfect] Tiny Open Firmware TUMS Table Update and Management System Technical and Office Protocol [Stanford University] Terms Of Service .TUT Tutorial (file name extension) Transaction-Processing Performance TVF Table of contents Verbosely from File [UNIX] Transactions Processing Facility TVFS Toronto Virtual File System [IBM] TVI Television Interference Tracks Per Inch TVOL Television On-Line Table Producing Language + TWAIN Technology Without Any Interesting Transaction Processing Language Name TPM Transactions Per Minute + Trusted (connection between application and Platform Module scanner software) TPORT Twisted Pair Port Transceiver [AT&T] TWEAKUI Tweak User Interface TP-PMD Twisted Pair-Physical Medium TWIP Twenty In Point (as in 20 Dependent (cable) twips/pixel) [Microsoft] TPS Transactions Per Second + TWX Teletypewriter Exchange Service Transaction Processing System TXD Transmit Data TPW Turbo Pascal for Windows .TXF Tax Exchange Format (file name TQFP Thin Quad Flat Pack extension) TQM Total Quality Management TXT Text TR Terminal Ready TXT2STF Text To Structured File [Lotus T/R Transmit/Receive Agenda] TRACERT Trace Route [Microsoft] TZ Time Zone [Unix] TRADIC * Transistorized Airborne Digital Computer (Name of first computer to be entirely transistorized) .TRM Terminal (file name extension) TRN Threaded Read News [Internet] + Token | TOP | UP to T | DN to V | BOTTOM | Ring Network TRON The Real-Time Operating System UA User Agent + User Area Nucleus UAE Unrecoverable Application Error TS Top Secret UAM User Authentication Method TSA Target Service Agent + Technical UART Universal Asynchronous Support Alliance + Receiver/Transmitter Telephony Services Architecture UAS User Application Software TSAPI Telephony Services Application UBE Unsolicited Bulk Email Program UBR Unspecified Bit Rate Interface [AT&T + Novell] .UC2 Compressed File (file name extension) TSB Termination Status Block [UltraCompressor] TSD Type-Specific Driver UCB Universal Content Broker TSE The Semware Editor UCBE Unsolicited Commercial Bulk Email TSID Transmitting Subscriber UCC Uniform Commercial Code Identification [Microsoft] UCE Unsolicited Commercial Email TSN Transition Sequence Number UCL Universal Communications Language TSO Time Sharing Option UCS Unicode Conversion Support + TSOP Thin Small-Outline Package Universal Character Set + TSP Telephony Service Provider User Coordinate System TSR Terminate and Stay Resident UCT Universal Coordinated Time TSS Task State Segment + Time Sharing UDA Universal Data Access [Microsoft] System UDB Universal Data Base TS/SI Top Secret/Sensitive Information UDC Universal Decimal Classification + .TST Test (file name extension) User Defined Commands TSTN Triple Supertwisted Nematic UDD User Data Document TSV Tab Separated Values UDDI Universal Description, Discovery and TT Typewriter Text Integration TTA Transport-Triggered Architecture UD-DVD Ultra-Definition Digital Video Disk TTCN Tree and Tabular Combined Notation UDE Universal Data Exchange .TTF TrueType Font (file name extension) UDEC * Universal Digital Electronic Computer TTL Through The Lens + Transistor[Burroughs] Transistor Logic UDF Universal Disk Format + User Defined TTP Thermal-Transfer Printing Functions Terminal Node Controller Transport Neutral Encapsulation U... UDG User Defined Gateway UDMA Ultra Direct Memory Access UDP User Datagram Protocol UDT Uniform Data Transfer + User-Defined Type UEMS Unsolicited Electronic Mail Solicitation UFS Universal\Unix File System UG User Group UHCI Universal Host Controller Interface UHF Ultra-High Frequency UHL Universal Hypertext Link UI Unix International + User Interface UIC User Identification Code UID User Identifier UIMA Unstructured Information Management Architecture [IBM] UIMS User Interface Management System UL Underwriters Laboratories + Unordered List + Upload ULA Uncommitted Logic Array ULB Ultra Wideband ULN Universal Link Negotiation ULS Universal Licensing System ULSI Ultra Large Scale Integration UMA Unified Memory Architecture UMB Upper Memory Block [LIM/AST] UMD Universal Media Disk UML Unified Modeling Language UMPC Ultra-Mobile Personal Computer UMS User Mode Scheduler UMTS Universal Mobile Telecommunications System UNC Universal Naming Convention + Uuencoded Netnews Collator [Unix] UNCOL Universal Computed Oriented Language UNEP Unbundled Network Platform UNI User-Network Interface UNICOM Universal Integrated Communication (System) UNICOS Universal Compiler FORTRAN compatible UNII Unlicensed National Information Infrastructure UNIVAC Universal Automatic Computer UNIX (AT&T Bell Laboratories Operating System) UNMA Unified Network Management Architecture UNSPSC Universal Standard Products and Services Classification UP Uniprocessor UPC Universal Product/Program Code + User Parameter Control UPG Upgrade UPL User Program Language UPM Unix Programmer's Manual + User Profile Management [IBM] UPNP (UPnP) Universal Plug and Play UPS United Parcel Service (company) + Uninterruptible Power Supply/System URC Uniform Resource Characteristics + Uniform Resource Citation UREP Unix RSCS Emulation Protocol (protocol) URI Uniform Resource Identifier URL Uniform Resource Locator URN Uniform Resource Name/Number US Unit Separator USART Universal Synchronous-Asynchronous Receiver/Transmitter USB Universal Serial Bus [Intel] US-CERT United States Computer Emergency Readiness Team USENET User's Network [Internet] USERID User Identification USOC Universal Service Ordering Code USQ Unsqueezed (files) USR US Robotics (corporation) USRT Universal Synchronous Receiver/Transmitter USSA User Supported Software Association (United Kingdom) UT User Terminal UT1 Universal Time One UTC Coordinated Universal Time UTF Unicode Transformation Format UTI Universal Text Interchange/Interface UTM Unified Threat Management + Universal Transverse Mercator (grid) UTP Unshielded Twisted-Pair (cable) UU Uuencode/Uudecode UUCP Unix-To-Unix Copy Protocol UUD UUDecoding [Unix] UUDECODE Unix-To-Unix Decoding UUE UUEncoding [Unix] UUENCODE Unix-To-Unix Encoding UUI User-To-User Information [AT&T] UUID Universal Unique Identifier UV Ultraviolet UWB Ultra-Wide Band UWR Ultra Wideband Radio UXGA Ultra Extended Graphics Array V... | TOP | UP to U | DN to W | BOTTOM | VA Virtual Address + Visual Age [IBM] VAD Value Added Dealer VADD Value Added Disk Driver VADSL (See DSL) VAI Video As Input VAL Value + Voice Application Language .VAL Validity Checks (file name extension) [Paradox] VAM Virtual Access Method VAN Value Added Network VAP Value Added Process VAR Value Added Reseller + Value Added Retailer + Variable VAST Variable Array Storage Technology VAX/VMS Virtual Address Extension/Virtual Memory System [DEC] VB Variable Block + Visual Basic [Microsoft] VBA Visual Basic for Applications [Microsoft] VBE/AI Vesa Bios Extension/Audio Interface VBI Vertical Blanking Interval VBNS Very High Speed Backbone Network Service [MCI + NSF] VBR Variable Bit Rate VBRUN Visual Basic Runtime VBS Visual Basic Script .VBX Visual Basic Extension (file name extension) VCC Virtual Channel Connection VCD Video Compact Disk + Virtual Visual Interactive Parser Communications Driver VIPER Verifiable Integrated Processor for VCI Virtual Circuit Identifier Enhanced Reliability VCL Visual Class/Component Library VIS Video Information System [Tandy] + VCM Virtual Channel Memory Viewable Image Size + VCN Virtual Cluster Number Visual Instruction Set [Sun] + VCOS Visual Caching Operating System Voice Information System [AT&T] VJ HEADER Van Jacobsen Header (compression) VCPI Virtual Control Program Interface [Unix] VCR Video Cassette Recorder VLA Variable-Length Array VDD Virtual Device Driver VLAN Virtual Local Area Network VDDM Virtual Device Driver Manager VL-BUS Vesa Local-Bus [VESA] VDE Video Display Editor + Visual VLD Variable-Length Decoder Development Environment VLF Very Low Frequency VDI Virtual Device Interface VLINK Visited Link [HTML] VDISK Virtual Disk VLIW Very Large Instruction Word VDM Virtual DOS Machine [IBM] VLM Virtual Loadable Module VDMAD Virtual Direct Memory Access Device VLSI Very Large Scale Integration [Microsoft] VLSIPS Very Large Scale Immobilized Polymer VDS Virtual DMA Services Synthesis VDSL (See DSL) VLT Variable List Table VDT Video Dial Tone + Video Display VM Virtual Machine + Virtual Memory Terminal VMA Virtual Memory Address VDU Video Display Unit + Visual Display VMB Virtual Machine Boot Unit VMD Video Motion Detection VEGA Video-7 Enhanced Graphics Adapter VME Versa Module Eurocard + [Video-7, Inc.] Virtual Memory Environment VEMM Virtual Expanded Memory Manager VML Vector Markup Language [Microsoft] VEMMI Versatile Multimedia Interface VMM Virtual Machine/Memory Manager VER Verify + Version VMOS Vertical MOS VERONICA Very Easy Rodent-Oriented Net-Wide VMP Virtual Modem Protocol Index to VMS Virtual Machine Storage + Virtual Computer Archives [Internet] Memory System + VERR Verify Read Access Voice Message System VERW Verify Write Access VMT Virtual Memory Technique VES Video Encoding Standard [Oracle] + VNA Virtual Network Architecture Virtual Execution System VNC Virtual Network Computing VESA Video Electronics Standards VNOS Visual Network Operating System Association VOC Creative Voice (format) [Sound VF Virtual Floppy Blaster] VFAT Virtual File Allocation Table VOD Video On Demand [Microsoft] VOFDM Vector Orthogonal Frequency Division V.FC Version.First Class (communications Multiplexing [Cisco] standard) VOIP Voice Over Internet Protocol VFD Vacuum Fluorescent Display VOL Volume VFW Video For Windows [Microsoft] VOM Volt-Ohm-Milliammeter VGA Video Graphics Array VOR Visions Of Reality VGC Video Graphics Controller VOS Verbal/Virtual/Voice Operating System VHDL VHSIC Hardware Description Language VP Virtual Path VHF Very-High Frequency VPD Virtual Printer Device + Vital VHS Very High Speed + Video Home System + Product Data [IBM] Virtual Host Storage VPDN Virtual Private Data Network VHSIC Very High Speed Integrated Circuit VPDS Virtual Private Data Service [MCI] VI Visual Interactive (editor) [UNIX] VPE Video Port Extensions [Microsoft] + VIA Virtual Interface Architecture Visual Programming Environment [Intel] VPL Virtual Programming Language VIE Virtual Information Environment VPLS Virtual Private LAN Service VIF Virtual Interface + Virtual Interrupt VPM Video Port Manager Flag VPN Virtual Page Number + Virtual Private VIM Vendor Independent Mail + Network Vendor Independent Messaging + Video VPS Voice Processing System Interface Module VPSC Vault, Process, Structure, VIN Vehicle Identification Number Configuration VINES Virtual Networking System [Banyan] VPT Virtual Print Technology VIO Video Input/Output + Virtual [Dataproducts] Input/Output VR Virtual Reality + Voltage ViP Visual Programming [Lotus] Regulated/Regulator VIP Variable Information Processing + VRAM Video Random Access Memory Video Information Provider + VRD Virtual Retinal Display + Virtual Virtual Interrupt Pending + Reference Desk VRE Voltage Regulated Extended VRM Vendor Relationship Management + Voltage Regulator Module VRML Virtual Reality Modeling Language (originally named Virtual Reality Markup Language) VROOMM Virtual Real-time Object Oriented Memory Manager [Borland] VRRP Virtual Router Redundancy Protocol .VRS WordPerfect Graphics Driver (file name extension) VRT Voltage Regulation Technology [Intel] VRU Voice Response Unit VS Virtual Storage VSAM Video Surveillance and Monitoring + Virtual Storage Access Method VSAT Very Small Aperture Terminal VSE Virtual Storage Extended VSF Vertical Scanning Frequency VSI Virtual Socket/Switch Interface VSIO Virtual Serial Input Output VSM Virtual Shared Memory + Virtual Storage Management + Visual System Management [IBM] VSN Volume Serial Number VSOS Virtual Storage Operating System VSS Visual SourceSafe [Microsoft] VST Virtual Studio Technology VSTO Visual Studio Tools [Microsoft] VSWR Voltage Standing Wave Ratio VSYNC Vertical Sync VT Vertical Tab + Virtualization Technology [Intel] WAITS Wide Area Information Transfer System WAN Wide Area Network WAP Wireless Application Protocol WAR Web Archive WARP Web Service Aggregtion, Rely and Propogation WATS Wide Area Telecommunications Service .WAV Waveform Audio (file name extension) WBEM Web-Based Enterprise Management W/C Watts Per Channel WC Word Count W-CDMA Wideband CDMA WCG Wide Color Gamut WCS World Coordinate System WD-40 Water Displacement-40th Attempt WDDM Windows Display Driver Model [Microsoft] WDDX Web Distributed Data Exchange WDL Windows Driver Library [Microsoft] WDM Wavelength Division Multiplexing + Windows Driver Model [Microsoft] WDRAM Windows Dynamic Random Access Memory WEA Web Enabled Application .WEB Entities Emphasizing the WWW (Domain Name) [Internet] WEBDAV Web Based Distributed Authoring and Versioning WEBNFS Web Network File System [Sun] WEFT Web Embedding Fonts Tool [Microsoft] WELL Whole Earth 'Lectronic Link (BBS) WEP Wired Equivalent Privacy + Wireless Encription Protocol WFM Wired For Management [Intel] WFQ Weighted Fair Queuing [Cisco] VTAM Virtual Telecommunications Access WFW Windows For Workgroups [Microsoft] Method [IBM] WGS Work Group System VTNS Virtual Telecommunications Network WHAM Waveform Hold and Modify [Microsoft] Service WHC Workstation Host Connection VTS Volume Tracking Driver WHQL Windows Hardware Quality Labs VUI Video User Interface [Microsoft] VUP VAX Unit of Performance WIDEN Wideband Integrated Digital VWB Visual WorkBench [Microsoft] Enhancement Network VWM Virtual Window Manager WIFI (Wi-Fi) Wireless Fidelity VXA Variable-Speed Architecture [Ecrix] WIKI Wikipedia (encylopedia) VxD Virtual Extended Driver [Microsoft] WIM Wireless Instant Messaging .VXD Virtual Device (file name extension) WIMP Windows, Icons, Menus and Pulldowns [Microsoft] WIN 9.X Windows95/Windows98 VXML Voice Extensible Markup Language WIN...CE Windows Compact Edition [Microsoft] V&V Verification and Validation WINDBG Windows Debugger [Microsoft] WINE Windows Emulator WINForum Wireless Information Networks Forum WIN...FS Windows Future Storage [Microsoft] W... WIN/MAC Windows Macintosh WIN...MCE Windows Media Center Edition [Microsoft] | TOP | UP to V | DN to X | BOTTOM | WIN...ME Windows Millennium Edition [Microsoft] W/ With WINS Windows Internet Naming Service W3 (see WWW) [Microsoft] W3A World Wide Web Applets WIN...SE Windows Second Edition [Microsoft] W3C World Wide Web Consortium WINSOCK Windows Open Systems Architecture W4 What-Works-With-What [Microsoft] + WAAS Wide Area Augmentation System Windows Sockets WABI Windows Application Binary Interface WINWORD Word For Windows [Microsoft] [SunSoft] WIN...XP Windows The "Experience" [Microsoft] WAE Wireless Application Environment WISE WordPerfect Information System WAI Web Accessibility Initiative + Web Application Interface [Netscape] Environment WISP Wireless Internet Service Provider WAIS Wide Area Information Server WIT Web Interactive Talk [Internet] WAITI Wait-For-Interrupt .WKB Workbook (file name extension) Interface [O'Reilly] [WordPerfect] WSDL Web Services Definition/Description .WKE Worksheet (file name extension) Language [IBM/Microsoft] [Lotus 1-2-3] [LDC] WSE Web Services Enhancement .WKQ Spreadsheet (file name extension) WSH Windows Scripting Host [Microsoft] [BORQU] WSP Wireless Session Protocol .WKS Worksheet (file name extension) WSUI Web Services User Interface [Lotus 1-2-3] [LDC] WT Write Through .WKZ Compressed Spreadsheet (file name WTA Wireless Telephony Application extension) [BORQU] WTLS Wireless Transport Layer Security .WK1 Worksheet (file name extension) WTM Wired For Management [Lotus 1-2-3] [LDC] WWIS World Wide Information System WL Word Line [Internet] WLAN Wireless Local Area Network WWW World-Wide Web [Internet] .WLG Dr. Watson Log (file name extension) WXGA Wide Extended Graphics Array WLL Wireless Local Loop WYSBYGI What You See Before You Get It .WMA Windows Media Audio (file name WYSIWYG What You See Is What You Get extension) [Microsoft] WMC Workflow Management Coalition WME Wireless Multimedia Enhancements .WMF Windows Metafile Format (file name extension) [Microsoft] WMFSDK Windows Media Format Software Development Kit [Microsoft] | TOP | UP to W | DN to Y | BOTTOM | WMI Windows Management Instrumentation [Microsoft] XA Extended Architecture + Extended WML Wireless Markup Language Attribute WMP Windows Media Player [Microsoft] XACML Extensible Access Control Markup WMRM Write Many, Read Many Language WMT Windows Media Technologies XACT Cross-Platform Audio Content Tool [Microsoft] XAPIA X.400 Application Program Interface .WMV Windows Video File (file name Association extension) [Microsoft] X2B Hexadecimal to Binary [REXX] WNIC Wide-Area Network Interface Co.XBM X-Windows Bitmaps (file name Processor extension) (black and white) WNIM Wide-Area Network Interface Module XBRL Extensible Business Reporting W/O Without Language WORM Write Once, Read Many X2C Hexadecimal to Character [REXX] WOS Workstation Operating System XCHG Exchange WOSA Windows Open Services/Systems XCMD External Command Architecture [Microsoft] XCOPY Extended Copy WOW Window On Windows [Microsoft] X2D Hexadecimal to Decimal [REXX] WP WordPerfect + Word Processing + Write XDF Extended Density Format [IBM] Protected XDR Extended/External Data Representation WPA Wi-Fi/Wireless Protected Access XFCN External Function .WPD Windows Printer Description (file XFDL Extensible forms Description Language name extension) XGA Extended Graphics Array [IBM] .WPG WordPerfect Graphics (file name XHMD X-Directed Horizontal Magnetic Dipole extension) XHTML Extensible HyperText Markup Language WPHD Write-Protect Hard Disk XID Exchange Identifier .WPK Keyboard (file name extension) XIOS Extended Input/Output System [WordPerfect] .XLA Add-In (file name extension) WPM Words Per Minute [Microsoft-Excel] .WPM Macro (file name extension) XLAT Translate [WordPerfect] XLF Exceptional Fortran [IBM] WPOS Workplace Operating System XLIFF XML Localization Interchange File WPS Windows Printing System [Microsoft] + Format [IBM] Workplace Shell [OS2] .XLK Backup (file name extension) WPVM Windows Parallel Virtual Machine [Microsoft-Excel] .WQ1 Spreadsheet (file name extension) XLL Extensible Link Language [BORPQU] XLM Excel Macro Language [Microsoft] .WQ! Compressed Spreadsheet (file name .XLT Template (file name extension) extension) [BORPQU] [Microsoft-Excel] WRAM Windows Random Access Memory XMIT Transmit WRE Weighted Random Early Detection XML Extensible Markup Language [Cisco] XMM Extended Memory Manager [LIM/AST] .WRI Write (file name extension) XMS Extended Memory Specification WRK Windows Resource Kit [Microsoft] [LIM/AST] WS WordStar + Workstation XNS Xerox Network System (protocol) WSAPI Web Site Application Program [Xerox] X... XOFF Transmitter Off XON Transmitter On XOR Exclusive OR (Also EOR) XP Extreme Performance [Compaq] XPATH XML Path Language XPCOM Cross Platform Component Object Model [Mozilla] XPE XP Embedded (see WIN...XP) [Microsoft] .XPM X-Windows Pixelmaps (file name extension) (color) XPRM Xerox Print Resources Manager [Xerox] XPS XML Paper Specification (file format) XRI Extensible Resource Identifier XRNS Extensible Resource Name System XRT Extensions for Real-Time XSL Extensible Stylesheet Language XSLT Extensible Stylesheet Language Transformation XSMD Extended Storage Module Drive (interface) XSSI Extended Server Side Includes XTAL Crystal XTCLK External Transmit Clock XUL Extensible User-Interface Language [Netscape] Y... | TOP | UP to X | DN to Z | BOTTOM | YAM Yet Another Modem [Omen Technology] YAHOO Yet Another Hierarchically Officious Oracle [Internet] Y2K Year 2000 (Y/N)? (Asks for a YES or NO decision) YTD Year To Date A Glossary of Computer Oriented Abbreviations and Acronyms http://www.geocities.com/ikind_babel/ba bel/babel.html