A Glossary of Computer Oriented Abbreviations and Acronyms

Version 99A

Copyright © 1989-1999...Irving & Richard Kind...All Rights Reserved


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Appendix A Appendix B Appendix C NOTES



     First compiled when I became frustrated while reading magazine

articles, help wanted ads and equipment for sale brochures....all

pertaining to computers....where the following Abbreviations and

Acronyms were used and their meanings were either not known to me

or were not immediately available.  I have actually seen (or have

been told about) these combinations of letters used at one time or

another in magazines, newspapers, handbooks, etc.  They apply to

personal computers, multimedia, communications, programming,

networking, name it.  This glossary can never be

considered complete so look over the entries and let me have your

feedback.  If you find errors or if you can suggest additions, they

will be most welcome (See NOTE 1).  If you can help, you have my

thanks in advance.


     Keep BABEL on your hard drive or floppy disk or print it and

keep it on your desk (See NOTE 2).  Either way, you will have an

outstanding reference, immediately available.  BABEL is revised

three times a year, in January, May and September so as to keep you

up-to-date.  See APPENDIX A for methods that may be used to




     Letter groups followed with " * " were used before 1965.  At

some of these, historical information is noted.  For brief

interpretations of "smiley faces" and other informal expressions

used in electronic mail messages, see APPENDIX B.  For a partial

list of Country Domain Names, see APPENDIX C.


     BABEL is not in the public domain.  Permission is hereby

granted to any public institution to redistribute BABEL;  ONLY in

its entirety and provided it is distributed without ANY

modification, to also include this opening page, copyright and

version notices and format.  It may not be incorporated into any

other document, or published, or sold, without my express written

permission.  Any questions concerning these restrictions should

only be made in writing.  Send p-mail to address shown below.


     And please remember to ECAL.


         Irving Kind                     Additions, Corrections

         c/o K & D                       or Comments..Send e-mail

         One Church Lane                 to:

         Baltimore, MD  21208



        Jan 1999 version = 99A       Jan 2000 version = 00A

        May 1999 version = 99B       May 2000 version = 00B

        Sep 1999 version = 99C       Sep 2000 version = 00C


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AA        Auto Answer

AAB       All-to-All Broadcast

AAL       Asynchronous Transfer Mode Adaption Layer

AAP       Applications Access Point [DEC]

AAS       All-to-All Scatter

AASP      ASCII Asynchronous Support Package

AAT       Average Access Time

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

ABR       Available Bit Rate

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 +

          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

ACM       Association for Computing Machinery

          Audio Compression Manager [Microsoft]

ACMS      Application Control Management System

ACP       Ancillary Control Program + Auxilary 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

ACTS      Automated Computer Time Service

ACTT      Advanced Communication and Timekeeping Technology [Seiko]

ACU       Automatic Calling Unit

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

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)

ADL       Address Data Latch

ADLAT     Adaptive Lattice Filter

ADLC      Adaptive Lossless Data Compression [IBM] +

          Asynchronous Data Link Control

ADMACS    Apple Document Mangagement And Conrol System

ADMD      Administrative Management Domain [X.400]

.ADN      Add In Utility (file name extension)

          [Lotus 1-2-3] [LDC]

ADO       Active Data Objects

ADP       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      Asymmetric Digital Subscriber Line

ADSP      Apple 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

AES       Advanced Encryption Standard

AESA      ATM End System Address

AF        Auxiliary carry Flag

AFA       Accelerated File Access

AFC       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] +

          Appletalk Filing Protocol [Macintosh]

AFS       Andrew File System (protocols)

AFTP      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

AHS       Automated Highway Systems

AI        Analog Input + Artificial Intelligence

AIA       Applications Integration Architecture [DEC]

AIC       AIXwindows Interface Composer [IBM]

AIF       Audio Interchange Format

AIIM      Association for Information and Image Management

AIN       Advanced Intelligent Network [Bell Atlantic]

AIR       Architecture Implementation Review

AIS       Automated Identification System [NCIC]

AISB      Association of Imaging Service Bureaus

AISP      Association of Information Systems Professionals

AIT       Advanced Intelligent Tape (drive) [Sony]

AIX       Advanced Interactive Executive [IBM]

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

ALINK     Active Link [HTML]

ALIWEB    Archie Like Indexing in the Web [Internet]

ALN       Asynchronous Learning Network

ALR       Advanced Logic Research, Inc.

ALT       Alternate (mode)

ALT.      Alternate lifestyle [USENET Newsgroup Category]

ALU       Arithmetic Logic Unit

AMA       Automatic Message Accounting

AMANDDA   Automated Messaging and Directory Assistance

AMD       Active Matrix Display +

          Advanced Micro Devices, Inc.

AMI       American Megatrends, Inc.

AMMA      Advanced Memory Management Architecture

          [Everex Systems]

AMPS      Advanced Mobile Phone Service

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

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

API       Application Program Interface

APIC      Advanced Programmable Interrupt Controller (bus) [Intel]

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

APRP      Adaptive Pattern Recognition Processing

APS       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      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

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

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

.ASC      ASCII text (file name extension)

ASCC    * Automatic Sequence Controlled Calculator [IBM]

ASCII     American Standard Code for Information Interchange

ASF       Active Streaming 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] +

          Authorized Service Provider +

          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

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

ATAPI     Advanced Technology Attachment Packet Interface

ATDP      Attention Dial Pulse

ATDT      Attention Dial Tone

ATE       Automated Test Equipment

ATG       Advanced Technology Group

ATH       Attention Hang-Up (Modem command)

ATL       Active Template Library

ATM       Adobe Typeface Manager + 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 + Audiovisual + Authenticity Verification

AVA       Audio Visual Authoring [IBM]

AVC       Audio Visual Connection [IBM]

AVD       Alternating Voice and Data

AVG       Average

AVI       Audio Visual Interleave [Microsoft]

AVR       Automatic Voice Recognition

AVT       Applied Voice Technology

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


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BACP      Bandwidth Allocation Control Protocol

BAK       Binary Adaptation Kit [Microsoft]

.BAK      Backup (file name extension)

BAL       Basic Assembly Language

BALUN     Balanced Unbalanced (device)

BAM       Boyan Action Module

BAPI      Business Application Programming Interface [SAP]

BARTS     Bell Atlantic Regional Timesharing

.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)

BBS       Bulletin Board System

BCC       Block Check Character

BCC:      Blind Carbon Copy

BCD       Binary Coded Decimal

B-CHANNEL Bearer Channel

BCL       Batch Command Language

BCN       Beacon

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      Broadband ADSL

BE        Below or Equal

BECN      Backward Explicit Congestion Notification

BEDO      Burst Extended Data Out

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

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

BI        Binary Input

.BIB      Bibliography (file name extension)

BiDi      Bi-Directional

BIFET     Bipolar Field Effect Transistor

BIFF      Binary Interchange File Format

BIM       Beginning of Information Marker

.BIN      Binary (file name extension)

BINAC   * Binary Automatic Computer

BIND      Berkeley Internet Name Domain

BINHEX    Binary Hexadecimal

BIOS      Basic Input/Output System

BIS       Business Information System

BISDN     Broadband Integrated Services Digital Network

BIST      Built-In Self-Test


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.      Business [USENET Newsgroup Category]

.BK!      Backup (file name extension) [WordPerfect]

.B~K      Backup (file name extension)

BKSP      Backspace

BL        Backlit + Bit Line

BLAST     Blocked Asynchronous Transmission (protocol)

          [Communications Research Group]

.BLD      BASIC Bload Graphics (file name extension)

BLE       Branch if Less or Equal

BLER      Block Error

BLK       Block

BLMC      Buried Logic Macrocell

BLOB      Binary Large Object

BLOS      Branch if Lower Or Same

BMI       Branch if Minus

BMIC      BusMaster Interface Controller [Intel]

BMP       Basic Mapping Support + Batch Message Processing Program

.BMP      Bitmap (file name extension) [Paintbrush Format]

BNC       Bayonet Neill-Concelman (connector used with

          coaxial cable invented by Mr. Neill-Concelman)

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

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

BPI       Bits Per Inch

BPL       Branch if Plus

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       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

BSV       BASIC Bsave Graphics (file name extension)

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

BTOA      Binary To ASCII

BTP       Batch Transfer Program

BTR       Bit Test and Reset

BTS       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


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C         C Programming Language

.C        C source code (file name extension) [C]

CA        Collision  Avoidance

.CAB      Cabinet (file name extension) [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

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

CAP       Carrierless Amplitude and Phase-Modulation +

          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

CARL      Colorado Alliance of Research Libraries [Internet]

CAS       Column Address Select +

          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

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

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

CCITT     Comite Consultatif International Telegraphique et

          Telephonique/ Consultative Committee for International

          Telegraph and Telephone

CCL       Connection/Cursor Control Language

CCP       Console Command Processor

CCS       Common Command Set + Common Communications Services +

          Common Communications Support +

          Continuous Composite Servo

.CCS      Color Calibration System (file name extension)

CCSD      Cellular Circuit-Switched Data

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]

CDBT      Compact Disk-Based Training

CDC       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

CDOS      Concurrent Disk Operating System

CDPD      Cellular Digital Packet Data

CDR       Call Detail Record + Call Detail Recording +

          Common Data Representation

CD-R      Compact Disk - Recordable

CDRAM     Cache DRAM

CD-RDx    Compact Disk - Read Only Memory Data Exchange Standard

CDRL      Contract Data Requirements List

CD-ROM    Compact Disk - Read Only Memory

CD-RTOS   Compact Disk - Real Time Operating System

CD-RW     Compact Disk - Re-Writable

CDS       Current Directory Structure

CDSA      Common Data Security Architecture

CDSL      Consumer Digital Subscriber Line [Rockwell]

.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 +

          Convert Enable

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 European pour la Recherche


CERT      Computer Emergency Response Team

CFB       Cipher Feedback + Configurable Function Block

.CFG      Configuration (file name extension)

CFM       Code Fragment Manager [Macintosh] +

          Cubic Feet Per Minute

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 1-2-3] [LDC]

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

.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

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 +


CIDR      Classless Inter-Domain Routing

CIF       Common Interchange/Intermediate Format +

          Crystallographic Information File +

          Customer Information Feed

CIFS      Common Internet File System

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      Computer and Interactive Voice Response

CIX       Commercial Internet Exchange +

          Compulink Information Exchange

CJLI      Command Job Language Interpreter

CKD       Count Key Data (device)

CLAR      Channel Local Address Register

CLASS     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

CLI       Call-Level Interface + Clear Interrupt Flag +

          Client Library Interface + Command Line 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) [Windows]

CLS       Clear Screen

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

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      Complementary Metal-Oxide Semiconductor

CMOV      Conditional Move

CMP       Compare + Computer

CMPS      Compare word String

CMS       Code Management System + Compiler Monitor System +

          Conversation Monitor 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 Administrator [Novell]

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 Retrieval

CNN       Composite Network Node

CNR       Carier to Noise Ratio

CNSS      Core Nodal Switching Subsystem [Internet]

.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

COEM      Commercial Original Equipment Manufacturer

COFF      Common Object File Format [Unix]

COGO      Coordinate Geometry (Programming Language)

COL       Collision + Computer Oriented Language

COLD      Computer Output to Laser Disk

COLL      Collision

COM       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

COMP      Compare + Communications

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

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

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

CP        Copy Protected

CPA       Certified Public Accountant

CPC       Constant Point Calculation

CPCS      Check Processing Control System [IBM]

CPE       Central Processing Element +

          Customer Premises Equipment +

          Customer Provided Equipment

.CPE      Cover Page (file name extension)

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

CP/M      Control Program for Microcomputers [Digital Research]

CPS       Characters Per Second + Cycles Per Second

CPT       Command Pass Through

CPU       Central Processing Unit

CPW       Commercial Processing Workload [IBM]

CR        Carriage Return

CRAM      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

CR/LF     Carriage Return/Line Feed

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       Command Sequence Introducer + CompuServe Incorporated

CSID      Call Subscriber ID

CSL       Computer Sensitive Language

CSLIP     Compressed Serial Line Interface Protocol [Internet]

CSM       Code Set Map (file) + Communications Services Manager

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 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

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]

C&T       Chips and Technologies

CTB       Cipher Type Byte

CTC       Channel To Channel

CTCP      Client-To-Client Protocol

CTI       Computer-Telephony Integration

CTOS      Computerized Tomography Operating System +

          Convergent Technologies Operating System

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

CVF       Compressed Volume File

CVGA      Color Video Graphics Array

CVIA      Computer Virus Industry Association

CVT       Convert

CVW       CodeView for Windows

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]

CYL       Cylinder

CYMK      Cyan-Yellow-Magenta-Black (color model)


| TOP | UP to C | DN to E | BOTTOM |

D/A       Digital to Analog

DAA       Data Access Arrangement +

          Decimal Adjust for Addition

DAB       Digital Audio Broadcasting

DAC       Data Acquisition and Control +

          Digital to Analog Converter +

          Dual Attachment Concentrator

DAD       Desktop Application Director [Borland]

DAE       Digital Audio Extraction

DAI       Distributed Artificial Intelligence

DAL       Data Access Language [Apple Computer] +

          Disk Access Lockout

DAM       Data Acquisition and Monitoring

DAMPS     Digital AMPS

DAO       Data Access Object [Microsoft]

DAP       Data Access Protocol [DEC] +

          Developer Assistance Program

DAPIE     Developers Application Programming Interface Extensions

DARI      Database Application Remote Interface [IBM]

DARMS     Digital Alternate Realization of Musical Symbols

DART      Digital Audio Reconstruction Technology

DAS       Decimal Adjust for Subtraction +

          Dual-Attached Station

DASD      Direct Access Storage Device [IBM]

DAT       Digital Audio Tape + Disk Array Technology

.DAT      Data (file name extension)

DATACOM   Data Communications

DAV       Digital Audio-Video

DAVIC     Digital Audio-Visual Council

dB        Decibel

DB        Data Base + Data Buffer + Device Bay

dBA       Adjusted Decibel

DBC       Device Bay Controller

DBCS      Delivery Bar Code Sorter + Double-Byte Character Set

.DBF      Database (file name extension)

DBIS      Dun & Bradstreet Information Services

DBM       Data Base Manager

DBMS      Data Base Management System

DBR       DOS Boot Record

DBS       Data Base Server +

          Direct (to home) Broadcast (satellite) System

DBV       Digital Broadcast Video

DB2       Database 2

DC        Data Collection + Data Communication + Data Control +

          Device Control + Direct Current

D2C       Decimal To Character [REXX]

DCA       Digital Communications Associates +

          Document Content Architecture [IBM]

DCAF      Distributed Console Access Facility [IBM]

DCAM      Digital Camera + Direct Chip Attach Module

DCB       Device Control Block + Disk Coprocessor Board [Novell]

DCC       Data Country Code + Digital Command Control +

          Digital Compact Cassette + Direct Cable/Client Connection

          + Display Combination Code

DCD       Data Carrier Detect

DCE       Data Circuit-Terminating Equipment +

          Data Communications Equipment +

          Distributed Computing Environment [OSF] +

          Distributed Computing Equipment

DCED      Distributed Computing Environment Daemon

DCF       Data Communication Facility [IBM] +

          Data Compression Facility +

          Data Count Field [IBM] +

          Driver Configuration File [Lotus]

D-CHANNEL Data Channel

DCI       Display Control Interface

DCL       Data Control Language + Declaration +

          DEC Command Language [DEC] +

          Device Clear + Digital Control Logic +

          Digital Command Language [Digital]

DCOM      Distributed Component Object Model

DCP       Digital Light Processing [TI]

DCS       Data Collection System + Data Control System +

          Desktop Color Separation + Distributed Control System

DCT       Discrete Cosine Transform

.DCT      Dictionary (file name extension)

DCU       Data-Cache Unit

DD        Day + Digital Display + Double Density

DDA       Distributed Data Access + Domain-Defined Attribute

DDB       Device Dependent Bitmap + Device Descriptor Block

DDC       Digital Data Channel [VESA] + Display Data Channel

DDCMP     Digital Data Communications Message Protocol [DEC]

DDC1      Display Data Channel One

DDCS      Distributed Database Connection Services [IBM]

DDD       Data Definition Language + Direct Distance Dialing

DDE       Direct Data Entry + Dynamic Data Exchange [Microsoft]

DDEML     Dynamic Data Exchange Manager Library [Microsoft]

DDF       Display Data Channel + Dynamic Data Formatting [IBM]

DDI       Device Driver Interface +

          Digital Document Interchange + Direct Dial In

DDK       Device Driver Kit [Microsoft Windows]

DDL       Data Definition Language + Data Description Language

DDM       Distributed Data Management

DDN       Defense Data Network

DDNS      Dynamic Domain Naming System

DDP       Distributed Data Processing

DDR-SDRAM Double Data Rate-SDRAM

DDS       Digital Dataphone Service [AT&T] + Design Data Sheet +

          Digital Data Storage + Distributed Database Services

DDX       Digital Data Exchange

DE        Device End

DEA       Data Encryption Algorithm

DEC       Decrement + Device Clear + Digital Equipment Corporation

DECNET    Digital Equipment Corporation Networking (protocol)

DEF       Desktop Functional Equivalent [Compaq]

.DEF      Definitions + Defaults (file name extensions)

DEFRAG    Defragment

DEK       Data Encryption Key

DEL       Delete

DELSTR    Delete String [REXX]

.DEM      Demonstration (file name extension)

DEN       Document Enabled Networking [Novell-Xerox]

DER       Distinguished Encoding Rules

DES       Data Encryption Standard + Data Entry Sheet

.DES      Description (file name extension)

DET       Device Execute Trigger

DEV       Device

DF        Data Field + Destination Field + Device Flag +

          Double Flag

DFC       Data Flow Control

DFM       Design For Manufacturability [IBM]

DFP       Digital Flat Panel

DFS       Distributed File System

DFSMS     Data Facility Storage Management Subsystem [IBM]

DFT       Design For Testability + Diagnostic Function Test +

          Discrete Fourier Transform +

          Distributed Function Terminal

DFU       Data File Utility

DGIS      Direct Graphics Interface Standard

DHCP      Dynamic Host Configuration Protocol

DHL       Dynamic Head Loading

.DHP      Dr. Halo PIC (file name extension)

DHTML     Dynamic HTML

DI        Data In + Destination Index

DIA       Document Interchange Architecture [IBM]

DIB       Device Independent Bitmap +

          Directory Information Base +

          Dual Independent Bus [Intel]

DIBOL     DEC Business Oriented Language

.DIC      Dictionary (file name extension)

DID       Direct Inward Dialing

DIDS      Distributed Intrusion Detection System

DIF       Data Interchange Format

DIFFSENS  Differential Sense

DIIP      Direct Interrupt Identification Port

DIMM      Dual In-Line Memory Module

DIN       Deutsche Industrie Norm (German equivalent of EIA)

DIO       Data Input-Output

DIP       Dialup Internet Protocol [Internet] +

          Digital Imaging Processing +

          Dual In-line Package + Dual In-line Pin

DIR       Directory (file)

DIS       Draft International Standard +

          Dynamic Impedance Stabilization [CompuCom]

DISA      Data Interchange Standards Association +

          Direct Inward System Access

DISP      Displacement (offset)

DIT       Directory Information Tree

DIV       Divide

DIVE      Direct Interface Video Extension [OS/2 Warp]

DIW       D-Inside Wire [AT&T]

.DIZ      Description In Zip (file name extension)

DL        Download (also D/L)

DL/1      Data Manipulation Language 1 [IBM]

DLC       Data Link Control (protocol) [IBM] +

          Distributed Loop Carrier

DLCI      Data Link Connection Identifier

DLD       Display List Driver

DLE       Data Link Escape

DLL       Dynamic Link Library

DLM       Distributed Lock Manager + Dynamic Link Module

DLP       Digital Light Processing [TI]

DLR       DOS LAN Requester

DLS       Data Link Switching [IBM]

DLT       Digital Linear Tape

DM        Distributed Memory

DMA       Direct Memory Access/Addressing

DMAC      DMA Controller

DMACS     Distributed Manufacturing Automation & Control Software

DMD       Digital Micromirror Device [TI]

DME       Direct Memory Execution +

          Distributed Management Environment

DMF       Distribution Media Format [Microsoft]

DMI       Desktop Mangement Interface

DML       Data Manipulation Language

DMM       Digital Multimeter

DMMS      Dynamic Memory Management System

DMOS      Double-diffused Metal-Oxide Semiconductor

DMP       Dot Matrix Printer

DMPC      Distributed Memory Parallel Computer

DMPP      Distributed Memory Parallel Processor

DMQS      Display Mode Query and Set [IBM]

DMS       Data Management Software + Data/Document

          Management System

DMSD      Digital Multistandard Decoding

DMSS      Distributed Mass Storage System

DMT       Digital/Discrete Multi-Tone

DMTF      Desktop Management Task Force

DMY       Day Month Year

DN        Down

DNC       Direct Numerical Control

DNIC      Data Network Identification Code

DNIS      Dialed Number Identification Service

DNS       Domain Naming System

DO        Data Out + Distributed Objects

.DOC      Document + Documentation (file name extensions)

DOCSV     Data Over Circuit-Switched Voice

DOE       Distributed Objects Everywhere

DOIP      Dial Other Internet Providers [IBM]

DO-IT     Disabilities, Opportunities, Internetworking and


DOM       Document Object Model

DOMF      Distributed Object Management Facility

DOS       Disk Operating System

DOSEM     DOS Emulation

DOV       Data Over Voice

DOW       Day Of Week

DP        Data Processing

DPA       Demand Protocol Architecture [3Com] +

          Document Printing Architecture

DPAM      Demand Priority Access Method

DPAREN    Data Parity Enable [IBM]

DPB       Drive Parameter Block

DPC       Direct Program Control

DPI       Distributed Protocol Interface + Dots Per Inch

DPL       Descriptor Privilege Level

DPM       Digital Panel Meter

DPMA      Data Processing Management Association

DPMI      DOS Protected Mode Interface [Microsoft]

DPMS      Display Power Management Support

DPO       Data Phase Optimization

DPS       Document Processing System

DPSK      Differential Phase Shift Keying

DPtoTP    Display Coordinates to Tablet Coordinates


DQDB      Distributed Queue Dual Bus

DQL       Data Query Language

DR        Data Received

D/R       Direct or Reverse

DRAM      Dynamic Random Access Memory

DRAW      Direct Read After Write

DR.BOND   Dial-up Router Bandwidth On Demand [NEC]

DRDA      Distributed Relational Database Architecture [IBM]

DR-DOS    Digital Research-Disk Operating System

DRDW      Direct Read During Write

DRI       Digital Research Incorporated

DRM       Distributed Resource Management

DRO       Data Request Output + Destructive Read-Out

DRS       Document Registration System

.DRS      Driver Resource (file name extension) [WordPerfect]

DRV       Drive

.DRV      Device Driver (file name extension) (Also see .DVR)

.DRW      Draw + Drawing (file name extensions)

DS        Data Segment + Data Send + Data Server + Double Sided

D/S       Dhrystone Per Second

DSA       Digital Signature Algorithm + Directory System Agent

DSAP      Destination Service Access Point

DSD       Direct Stream Digital [Sony-Phillips]

DSDD      Double Sided, Double Density (diskette)

DSE       Data Storage Equipment

DSEA      Display Station Emulation Adapter

DSECT     Dummy Control Section

DSHD      Double Sided, High Density (diskette)

DSIS      Distributed Support Information Standard

DSL       Digital Subscriber Line +

          Dynamic Simulation Language

DSLAM     Digital Subscriber Line Access Multiplexer

DSMA      Digital Sense Multiple Access

DSN       Delivery Service Notification

DSOM      Distributed System Object Model

DSP       Digital Signal Processing/Processor +

          Directory Synchronization Protocol [Lotus]

DSQD      Double Sided, Quad Density (diskette)

DSR       Data Set Ready + Device Status Register +

          Device Status Report

DSS       Decision Support System + Digital Signature Standard

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       Disk Transfer Area

.DTA      Data (file name extension)

DTC       Desktop Conferencing

DTD       Document Type Definition

DTE       Data Terminal Equipment + Dumb Terminal Emulator

DTF       Distributed Test Facility

DTL       Dialogue Tag Language [IBM] + Diode-Transistor Logic

DTMF      Data Tone Multiple Frequency + Dual Tone Multifrequency

DTP       Desktop Publishing + Distributed Transaction Process

DTR       Data Terminal Ready + Data Transfer Rate

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       DESQview Script (file name extension)

DVC       Desktop Video Conferencing

DVD       Digital Video Disk

DVD-R     Digital Video Disk-Recordable

DVD-RAM   Digital Versitile Disc-RAM

DVD-ROM   Digital Versitile Disc-ROM

DVE       Digital Video Effect

DVI       Digital Video Interactive

.DVI      Device Independent (file name extension)

DVMRP     Distance Vector Multicast Routing Protocol [Internet]

.DVR      Device Driver (file name extension) (Also see .DRV)

DW        Data Warehousing

DWDM      Dense Wavelength Division Multiplexer

DWG       Drawing

DWMT      Discrete Wavelet Multitone

D2X       Decimal To Hexadecimal [REXX]

.DXB      Drawing Interchange Binary (file name extension)


DXC       Data Exchange Control

DXF       Drawing Exchange Format

DXI       Data Exchange Interface

DYNSRC    Dynamic Source