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The following information has be purloined from sources all over the Net and to try to identify them all would be one royal PITA, so those of you who have contributed (knowingly or otherwise), I extend my very Hardiest THANKS.

The preceeding information has been purloined from all over the NET by Lucien T. Elliott and was last updated on 10 January 1997

AccDefinitionAccDefinition
A/D Analog to Digital A/P Accounts Payable
A/R Accounts Receivable AA Auto Answer
AASP ASCII Asynchronous Support Package AAT Average Access Time
ABEND Abnormal End ABI Application Binary Interface
ABIOS Advanced BIOS ABS Absolute
ACC Accumulator ACD Automated Call Distribution
ACE Advanced Computing Environment [SCO] ACF Access Control Field
Advanced Communications Function
ACIS American Committee for Interoperable Systems ACK Acknowledgment
ACM Association for Computing Machinery ACMS Application Control Management System
ACP Ancillary Control Program
Auxillary Control Process 		ACS Access
Access Control Set
Access Control System
Asynchronous Communication Server
ACU Automatic Calling Unit ADA Automatic Data Acquisitions
(Programming Language named after Agusta Ada Lovelace)
ADC Adaptive Data Compression (protocol) [Hayes]
Add with Carry
Analog to Digital Convertor 		ADCCP Advanced Data Communication Control Procedures
ADF Automatic Document Feed ADMD Administrative Management Domain [X.400]
ADP Automatic Data Processing ADR Address
ADS Application Development System
Automatic Distribution System 		ADT Application Data Types
ADU Automatic Dialing Unit AFII Association for Font Information Interchange
AI Artificial Intelligence AIA Applications Integration Architecture [DEC]
AIIM Association for Information and Image Management AISB Association of Imaging Service Bureaus
AISP Association of Information Systems Professionals AIX Advanced Interactive Executive [IBM]
AKA Also Known As
All Kidding Aside 		ALGOL Algorithmic Language (see IAL)
ALR Advanced Logic Research Inc. ALT Alternate
ALU Arithmetic Logic Unit AMD Advanced Micro Devices Inc.
ANI Automatic Number Identification ANSI American National Standards Institute
AO Analog Output AOE Application Operating Environment [AT&T]
AP Adjunct Processor
Application Processor 		APAR Authorized Program Analysis Report {A Bug} [IBM]
APCUG Association of PC User Groups API Application programming interface
APL A Programming Language APM Advanced Power Management [IBM OS2]
APPC Advanced Program-to-Program Communication [IBM] APPI Advanced Peer-to-Peer Internetworking
APPN Advanced Peer-to-Peer Networking [IBM] APS Asynchronous Protocol Specification
APSE ADA Programming Support Environment APT Automatic Program Tools
ARCA Advanced RISC Computing Architecture ARMA Association of Records Managers and Administrators
ARPA Advanced Research Projects Agency ARTIC A Real-Time Interface Copressor [IBM]
ARU Audio Response Unit ASAP As Soon As Possible
ASCII American Standard Code for Information Interchange ASP Association of Shareware Professionals
ASPI Advanced SCSI Programming Interface [Adaptec] ASPS Advanced Signal Processing System
ASR Automatic Send-Receive
Automatic Speech Recognition 		ASYNC Asynchronous
AT Advanced Technology AT&T American Telephone and Telegraph
ATA AT Bus Attachment ATE Automated Test Equipment
ATG Advanced Technology Group ATM Automated Teller Machine
ATR Automatic Terminal Recognition ATS Administrative Terminal System
ATTN Attention ATTRIB Attribute
AUDIT Automated Data Input Terminal AUP Appropriate Use Policies [Internet]
AUTO Automatic AUX Auxiliary
AVG Average AVI Audio Visual Interleaved [Microsoft]
AX Architecture Extended

AccDefinition AccDefinition
B/F Background/Foreground
BAK Binary Adaption Kit [Microsoft] BAL Basic Assembly Language [IBM mainframe symbolic machine language]
BARTS Bell Atlantic Regional Timesharing BASIC Beginner's All-purpose Symbolic Instruction Code [Dartsmouth circ 1964]
BASM Built-In Assembler BBS Bulletin Board System
BCD Binary Coded Decimal BCL Batch Command Language
BCPL Basic Computer Programming Language BDOS Basic Disk Operating System
BI Binary Input BIOS Basic Input/Output System
BIS Business Information System BIT Binary digit
BITNET Because It's Time Network BIX Byte Information Exchange (BBS)
BKSP Backspace BL Backlit
BLAST Blocked Asynchronous Transmission [Communications Research Group] BLK Block
BLOB Binary Large Object BO Binary Output
BOF Beginning Of File BOM Beginning Of Message
BOOTP Bootstrap Protocol [Internet] BOS Basic Operating System
BOT Beginning Of Table/Tape/Task BPI Bits Per Inch
BPS Bits Per Second
Bytes Per Second 		BRI Basic Rate Interface
BSAM Basic Sequential Access Method BSC Binary Synchronous Communication
BSCS Bachelor of Science (Degree) in Computer Science BSD Berkely Standard Distribution
BSI British Standards Institute BSYNC Binary Synchronous Communications
BTAM Basic Telecommunications Access Method [IBM] BTW By The Way
BiSYNC Binary Synchronous Communications (protocol)

AccDefinition AccDefinition
C C Programming Language
C&T Chips and Technologies C/D Control Data
C/S Client Server CAD Computer Aided Drawing / Design
CADD Computer Aided Design and Drafting CAE Computer Aided Engineering
CAI Computer Aided Instruction CAL Computer Aided Learning
CAM Computer Aided Manufacturing CAM Computer Aided Manufacturing
CAP Computer Aided Publishing CAPD Computing To Assist Persons With Disabilities [Johns Hopkins University]
CASE Computer Aided System Engineering CASE Computer Aided Software Engineering
CASS Computer Assisted Search Service CAT Computer Aided Testing
CATS Computer Assisted Training System CBL Computer Based Learning
CBT Computer Based Training CCITT Consultative Committee for International Telegraph and Telephone
CCP Console Command Processor CCS Common Communications Support
CD Carrier Detect
Change Directory
Compact Disk 		CDC Control Data Corporation
CDL Computer Design Language CDOS Concurrent Disk Operating System
CEI Conducted Electromagnetic Interference CGA Color Graphics Adapter
CGI Computer Generated Images
Computer Graphics Interface 		CHR Character
CI$ Compuserve Information $ervice CICS/VS Customer Information Control System/Virtual Storage [IBM]
CIM CompuServe Information Manager
Computer Integrated Manufacturing 		CIOCS Communication Input/Output Control System
CIS Compuserve Information Service CIS CompuServe Information Service
Computer Information Systems
CISC Complex Instruction Set Computing CLI Command Line Interface
CLIST Command List CM Centimeter
CMA Concert Multi-thread Architecture CMC Communication Mangement Configuration
CMIP Common Management Information Protocol CMIS Common Management Information System
CML Current Mode Logic CMMU Cache/Memory Management Unit [Motorola]
CMOS Complementary Metal-Oxide Semiconductor CMS Conversation Monitor System [DEC VMS][IBM VM/CMS]
CNC Computerized Numerical Control CNSS Core Nodal Switching Subsystem [Internet]
CNV Conventional (pertaining to Memory) CNVT Convert
CO Central Office
Command Output
Convert Out 		COBOL COmmon Business-Oriented Language
CODASYL Conference on Data System Languages (Group that designed COBOL) COEM Commercial Original Equipment Manufacturer
COGO Coordinate Geometry (Programming Language) COL Computer Oriented Language
COMDEX Computer Dealers Exposition COMSAT Communications Satellite Corporation
CONFIG Configuration COSMOS Computer System for Mainframe Operations
CP/M Control Program for Microcomputers [Digital Research] CPA Certified Public Accountant
CPE Central Processing Element
Customer Premise Equipment
Customer Provided Equipment 		CPI Characters Per Inch
Clock Per Instruction
Common Programming Interface [IBM]
CPI-C Common Programming Interface for Communications [IBM] CPS Characters Per Second
CPU Central Processing Unit CR Carriage Return
CR/LF Carriage Return/Line Feed CRC Cyclic Redundancy Check
CREN Computer Research Education Network
Corporation for Research and Educational Networking 		CRF Cross Reference File
CROM Control Read Only Memory CRT Cathode Ray Tube
CRTC CRT Controller CS Computer Science
Chip Select
Clear to Send
Code Segment
CSD Corrective Service Disk [IBM] CSG Constructive Solid Geometry
Consulting Services Group [Lotus]
CSL Computer Sensitive Language CSMA/CD Carrier Sense Multiple Access/with Collision Detection
CSNET Computer Science Network CSP Commercial Subroutine Package
CompuCom Speed Protocol [CompuCom]
CSS Continuous System Simulator (Language) CSTA Computer-Supported Telephony Applications
CSU Channel Service Unit CSV Comma-Separated Variables
CTOS Computerized Tomography Operating System CTPA Coax-to-Twisted-Pair Adapter
CTRL Control CTS Clear To Send
CTSS Compatible Time Sharing System CUA Common User Access [IBM]
CUB Cursor Backward CUD Cursor Down
CUF Cursor Forward CUI Consistent User Interface
Common User Interface [IBM]
CUP Cursor Position CUPID Completely Universal Processor I/O Design [AST]
CURSOR CURrent Set Of Records CUTE Clarkston University Terminal Emulator
CUU Cursor Up CVF Compressed Volume File [Microsoft]
CVGA Color Video Gaphics Array CVIA Computer Virus Industry Association
CVW CodeView for Windows CWIS Campus Wind Information Systems [Internet]
CYA Cover Your ASSets CYL Cylinder

AccDefinition AccDefinition
D/A Digital to Analog
D/R Direct or Reverse DAC Data Acquisition and Control
Digital to Analog Converter
DAL Data Access Language [Apple Computer]
Disk Access Lockout 		DAM Data Acquisition and Monitoring
DARI Database Application Remote Interface [IBM] DASD Direct Access Storage Device
DAT Digital Audio Tape
Disk Array Technology 		DATACOM Data Communications
DB Data Base
Data Buffer 		DB2 Database 2 [IBM]
DBC DataBase Container DBCS Double-Byte Character Set
DBF Database File (also a table that roughly conforms to the xBase style) DBM Data Base Manager
DBMS Data Base Management System DBS Data Base Server
DC Data Collection
Data Communication
Data Control
Device Control
Direct Current 		DC/S Distributed Client Server
DCA Digital Communications Associates
Document Content Architecture 		DCAF Distributed Console Access Facility [IBM]
DCB Disk Coprocessor Board [Novell] DCC Digital Compact Cassette
Display Combination Code
DCD Data Carrier Detect DCE Data Communications Equipment
Distributed Computing Environment [OSF]
Distributed Computing Equipment
DCF Data Communication Facility [IBM]
Data Compression Facility
Data Count Field [IBM]
Driver Configuration File [Lotus] 		DCL Declaration
DEC Command Language [DEC]
Device Clear
Digital Control Logic
Digital Command Language [Digital]
DCS Data Collection System
Data Control System
Desktop Color Separation 		DCT Discrete Cosine Transform
DD Data dictionary
Day
Digital Display
Double Density 		DDB Device Dependent Bitmap
DDCMP Digital Data Communications Message Protocol [DEC] DDD Direct Distance Dialing
DDE Direct Data Entry
Dynamic Data Exchange [Microsoft] 		DDEML Dynamic Data Exchange Manager Library [Microsoft]
DDK Device Driver Kit [Microsoft Windows] DDL Data Definition Language
Data Description Language
DDM Distributed Data Management DDS Design Data Sheet
Digital Data Storage
DEC Decrement
Device Clear
Digital Equipment Corporation 		DEL Delete
DES Data Encryption Standard
Data Entry Sheet 		DEV Device
DF Data Field
Destination Field
Device Flag
Double Flag 		DFC Data Flow Control
DFS Distributed File System DFT Diagnostic Funtion Test
Discrete Fourier Transform
Distributed Function Terminal
DFU Data File Utility DGIS Direct Graphics Interface Standard
DI Data In
Destination Index 		DIA Document Interchange Architecture [IBM]
DIB Device Independent Bitmap DIBOL DEC Business Oriented Language
DID Direct Inward Dialing DIF Data Interchange Format
DIIP Direct Interrupt Identification Port DIO Data Input-Output
DIP Dual In-line Package
Dual In-line Pin 		DIR Directory
DIS Dynamic Impedance Stabilization [CompuCom] DISP Displacement (offset)
DIV Divide DL Download
DL/1 Data Manipulation Language 1 [IBM] DLC Data Link Control [IBM]
DLE Data Link Escape DLL Dynamic Link Library
DLM Dynamic Link Module DLR DOS LAN Requester
DMA Direct Memory Access/Addressing DMAC DMA Controller
DME Distributed Management Environment DML Data Management Language
Data Manipulation Language
DMM Digital Multimeter DMMS Dynamic Memory Management System
DMP Dot Matrix Printer DMS Data Management Software
Data Management System
DMTF Desktop Management Task Force DMY Day Month Year
DN Down DNC Direct Numerical Control
DNIS Dialed Number Identification Service DNS Domain Naming System
DO Data Out DOS Disk Operating System
DOSEM DOS Emulation DOW Day Of Week
DP Data Processing DPA Demand Protocol Architecture [3Com]
DPAREN Data Parity Enable [IBM] DPB Drive Parameter Block
DPC Direct Program Control DPI Dots Per Inch
DPL Descriptor Privilege Level DPM Digital Panel Meter
DPMA Data Processing Management Association DPMI DOS Protected Mode Interface [Microsoft]
DR Data Received DRAM Dynamic Random Access Memory
DRAW Direct Read After Write DRDA Distributed Relational Data Architecture [IBM]
DRDW Direct Read During Write DRI Digital Research Incorporated
DRO Data Request Output
Destructive Read-Out 		DRV Drive
DS Data Segment
Data Send
Data Server
Double Sided 		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)
DSL Dynamic Simulation Language DSP Digital Signal Processing/Processor
DSQD Double Sided Quad Density (diskette) DSR Data Set Ready
Device Status Register
Device Status Report
DSS Decision Support System DSW Data Status Word
Device Status Word
DTA Disk Transfer Area DTD Document Type Definition
DTE Data Terminal Equipment
Dumb Terminal Emulator 		DTL Diode-Transistor Logic
DTP Desktop Publishing DTR Data Terminal Ready
Data Transfer Rate
DU Disk Usage DUAT Direct User Access Terminal
DVI Digital Video Interactive DWG Drawing
DXC Data Exchange Control DXF Drawing Interchange Format
DOC(s) Documentation user's manual

AccDefinition AccDefinition
E-MAIL Electronic Mail
EA Extended Attribute [OS/2] EARN European Academic Research Network
EAROM Electrically Alterable Read Only Memory EARS Electronic Access to Reference Services
EATA Enhanced AT Bus Attachment EBC EISA Bus Controller
EBCDIC Extended Binary Coded Decimal Interchange Code [IBM] EBI Equivalent Background Input
Extended Background Investigation
EBT Electronic Benefits Transfer ECAL Enjoy Computing And Learn
ECC Error Check Code
Error Checking and Correction
Error Correction Code 		ECD Enhanced Color Display
ECMA European Computer Manufacturers Association ECP Enhanced Capabilities Port [Microsoft]
ED Erase Display EDA Embedded Document Architecture [Go Corporation]
EDC Enhanced Data Correction
Error Detection and Correction 		EDDC Extended Distance Data Cable
EDI Electronic Data Interchange
Electronic Document Interchange [DEC] 		EDIFACT EDI for Administration Commerce and Transport
EDLC Ethernet Data Link Control EDLIN Editor (Line Text)
EDOS Enhanced DOS for Windows EDP Electronic Data Processing
EDPM Electronic Data Processing Machine EDSAC Electronic Delay Storage Automatic Computer
EDSI Enhanced Small Device Interface EDVAC Electronic Discrete Variable Automatic Computer (First stored-program digital computer)
EEC Extended Error Correction EEG Electroencephalogram
EEM Extended Memory Management EEMS Enhanced Expanded Memory Specification
EEPROM Electrically Erasable Programmable Read-Only Memory EFA Extended File Attribute
EFF Electronic Frontier Foundation EFI Electromechanical Frequency Interference
EFTS Electronic Funds Transfer System EGA Enhanced Graphics Adapter
EIA Electronic Industries Association EIS Executive Information System
EISA Extended Industry Standard Architecture ELF Extremely Low Frequency
ELS Entry Level System EM Electronic Mail
Expanded Memory
EMB Extended Memory Block [LIM/AST] EMC Extended Math Coprocessor
EMI Electromagnetic Interference EMM Expanded Memory Manager
EMS Electronic Mail System
Electronic Message Service
Expanded Memory Specification [LIM] 		ENIAC Electronic Numerical Integrator and Computer (First electronic digital computer)
ENQ Enquiry EOA End of Address
EOB End of Block EOC End of Conversion
EOF End of File EOI End or Identify
EOJ End of Job EOL End of Line
End of List
EOM End of Message EOS End of String
EOT End Of Transmission/Text/Tape EPLD Electrically Programmable Logic Device
EPM Enhanced Editor for Presentation Manager [IBM] EPP Enhanced Parallel Port
EPROM Electrically Programmable Read Only Memory
Erasable Programmable Read Only Memory 		ER Enhancement request (request for a change to product or documentation)
EROM Erasable Read Only Memory ERR Error
ESA European Space Agency ESC Escape
ESD Electronic Software Distribution ESDI Enhanced Small Device Interface
ESP Emulation Sensing Processor
Enhanced Serial Port [Hayes] 		ESS Electronic Switching System
ESU Electro-Static Unit ETB End of Transmission Block
ETS Econometric Time Series ETX End of Text
EVGA Extended Video Graphics Array
Extended Video Graphics Adapter 		EWS Employee Written Software [IBM]
EXP Exponent EXT External
EXTRN External Reference

AccDefinition AccDefinition
F/T Full Time
FAC File Access Code FAQ Frequently Asked Questions
FAT File Allocation Table FAX Facsimile
FCB File Control Block FCC Federal Communications Commission
FCI Flux Changes per Inch FD Floppy Disk
Full Duplex
FDC Floppy Disk Controller FDDI Fiber Digital Device Interface
Fiber Distributed Data Interface FDISK Fixed Disk
FDM Frequency-Division Multiplexing FEFO First-Ended First-Out
FEP Front End Processor FET Field Effect Transistor
FF Flip-Flop
Form Feed 		FFT Fast Fourier Transform
FIF Fractal Image Format FIFO First-In First-Out
FILO First-In Last-Out FLC Ferro-electric Liquid Crystal
FLD Field FLL FoxPro Link Library
FLOPS Floating Point Operations Per Second FMS Forms Management System
FMT Format FNT Font
FOCUS Forum of Control Data Users FOG First Osborne Group
FORTH (Programming Language) FORTRAN Formula Translator (Programming Language)
FOSE Federal Office Systems Exposition FP FoxPro (1.02 2.x and occasionally 3.0)
FPD FoxPro for DOS FPM FoxPro for Macintosh
FPP Fixed Path Protocol
Floating Point Processor 		FPS Frames Per Second
FPU Floating Point Processor Unit FPW FoxPro for Windows
FQDN Fully Qualified Domain Name [Internet] FRAG Fragment
Fragmentation
FRAM Ferroelectric Random-Access Memory FRED Frame Editor
FRPI Flux Reversals Per Inch FSD File System Driver [OS/2]
FTAM File Transfer and Access Method FTP File Transfer Protocol [Internet]
FTS Federal Telecommunication System FUNC Function
FWIW For What It's Worth

AccDefinition AccDefinition
G/L General Ledger
GA General Availability GAAP Generally Accepted Accounting Principles
GAL Generic Array Logic GCR Group Code Recording
GDA Global Data Area GDDM Graphics Data Display Manager
GDI Graphics Device Interface GDT Geometric Dimensioning and Tolerancing
Global Descriptor Table
GEM Graphics Environment Manager (DRI Program) GENIE General Electric Network for Information Exchange
GEOS Graphic Environment Operating System [Geoworks] GHZ Gigahertz
GIGO Garbage In Garbage Out
Garbage In Gospel Out 		GIS Geographical Information System
GIX Global Internet Exchange [Internet] GKS Graphical Kernal System
GLM General Linear Models GMT Greenwich Mean Time
GNU Gnu's Not Unix (operating system) GOSIP Government Open Systems Interconnection Profile
GP Gas Plasma
General Purpose 		GPF General Protection Fault
GPI Graphics Programming Interface GPIB General Purpose Interface Bus
GPS Global Positioning System GPSS General Purpose Systems Simulator (language)
GRE Graphics Engine GUI Graphical User Interface
GW-BASIC Gee Whiz BASIC Gb Gigabit (1 000 megabits)

AccDefinition AccDefinition
H/V Horizontal/Vertical H/W Hardware
HACMP High Availability Cluster Multi-Processing [IBM] HAL Heuristically Programmed Algorithmic (computer) [from 1968 movie "2001: A Space Odyssey"]
HASP Houston Automatic Spooling Priority (System) HBA Host Bus Adapter
HD Hard Disk
High Density 		HDA Hard Disk Assembly
HDCD High Definition Compatible Digital HDFD High-Density Floppy Disk
HDI Head to Disk Interference HDLC High-Level Data Link Control
HDR Header HDSC High Density Signal Carrier [DEC]
HDSL High-rate Digital Subscriber Link HDTV High Definition Television
HDW Hardware HERC Hercules
HEX Hexadecimal HGA Hercules Graphics Adapter
HGCP Hercules Graphics Card Plus HH Hour
HIL Human Interface Link [HP] HLL High Level Language
HLLAPI High Level Language Application Programming Interface HLQ High Level Qualifier
HLT Halt HMA High Memory Area [Microsoft]
Hub Management Architecture
HMOS High Density Metal Oxide Semicnductor
High Speed Metal Oxide Semiconductor 		HP Hewlett-Packard (Company)
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 HPPA Hewlett-Packard Precision Architecture
HPPI High Performance Parallel Interface HRG High Resolution Graphics
HRIS Human Resource Information System HRMS Human Resource Management System
HS High Speed HSC High Speed Channel
HSP High Speed Printer HST High Speed Technology [U.S. Robotics]
HTH Hope this helps HTML HyperText Markup Language
HZ Hertz

AccDefinition AccDefinition
I/F Interface
I/O Input/Output IAB Internet Activities Board [Internet]
IAC In Any Case IAE In Any Event
IAL International Algebraic Language (ALGOL was first called IAL) IANA Internet Assigned Numbers Authority [Internet]
IANAL I Am Not A Lawyer IBM International Business Machines (Corporation)
IBM-GL IBM Graphics Language IC Input Circuit
Integrated Circuit
Interrupt Controller
ICA Intra-application Communications Area ICAS Intel Communicating Applications Specifications
ICCP Institute for the Certification of Computer Professionals ICE In-Circuit Emulator [Intel]
ICL Interface Clear ICMP Internet Control Message Protocol [Novell]
ICOMP Intel Comparative Microprocessor (index) [Intel] ICP Integrated Channel Processor
ICR Intelligent Character Recognition ICS Intuitive Command Structure
ID Identification
Identifier 		IDA Integrated Digital Access
Intelligent Disk Array
Intelligent Drive Array
IDAPI Integrated Database Application Programming Interface IDE Imbedded Drive Electronics
Integrated Development Environment [Borlund]
Integrated Drive Electronics
Intelligent Drive Electronics
Interactive Design and Engineering
Interface Design Enhancement
IDMS Integrated Data Base Management System IDP Integrated Data Processing
IDT Interrupt Descriptor Table IEEE Institute of Electrical and Electronics Engineers
IEF Information Engineering Facility IETF Internet Engineering Task Force
IFD Image File Directory IFG Incoming Fax Gateway
IFS Installable File System [OS/2] IGA Integrated Graphics Array
IGC Integrated Graphics Controller IIF Immediate IF
IMDS Image Data Stream (format) [IBM] IMG Image
IMHO In My Honest/Humble Opinion (Humble? Yeah right IMO In My Opinion
IMP Interface Message Processor IMPA Intelligent Multi-Port Adapter [DCA]
IMS Information Management System
Intermediate Maintenance Standards 		IN Input
INIT Initialize INM Integrated Network Management
INS Input String INT Integer
Internal
Interrupt
IOCS Input/Output Control System IOCTL Input/Output Control
IOPL Input/Output Priviledge Level IOSGA Input/Output Support Gate Array
IOW In Other Words IP Instruction Pointer
Internet Protocol
IPC Instructions Per Clock
Interprocess Communication 		IPF Information Presentation Facility
IPL Initial Program Load
Initial Program Loader 		IPSE Integrated Project Support Environment
IPX Internetwork Packet Exchange [Novell] IQL Interactive Query Language
IRC Internet Relay Chat [Internet] IRL Interactive Reader Language
Inter-Repeater Link
IRM Information Resource Management IRQ Interrupt Request
IS Information System
Interrupt Status 		ISA Industry Standard Architecture
ISAM Indexed Sequential-Access Management/Method ISD Image Section Descriptor
Instructional Systems Design
ISDN Integrated Services Digital Network ISI Internally Specified Index
ISIS Integrated Systems and Information Services ISL Interactive System Language
ISO/OSI International Standards Organization/Open Systems Interconnection (model) ISP Internet Service Provider [Internet]
Interrupt Status Port
ISPF Interactive System Programming Facility ISR Information Storage and Retrieval
Interrupt Service Routines
ISV Independent Software Vendor ITB Information Technology Branch
Intermediate Text Block
ITC International Typeface Corporation ITU International Telecommunication Union
ITUG International Telecommunications User Group ITV Interactive Television
ITX Intermediate Text Block IV&V Independent Verification & Validation
IVIS Interactive Video Information System IVR Interactive Voice Response
IVS Interactive Videodisk System

AccDefinition AccDefinition
JAD Joint Application Design
JCL Job Control Language JEDEC Joint Electronic Devices Engineering Council
JEIDA Japanese Electronics Industry Development Association JES Job Entry System
JIC Just In Case JPEG Joint Photographic Experts Group
JPL Jet Propulsion Laboratory

AccDefinition AccDefinition
KB Keyboard
Kilobyte (1 024 bytes)
KBD Keyboard KBD$ Keyboard [OS/2]
KBPS Kilo-Bytes Per Second KDT Key Definition Table
KOW Knock on wood KRS Knowledge Retrieval System
KSR Keyboard Send Receive

AccDefinition AccDefinition
LADDR Layered Device Driver Architecture [Microsoft]
LAN Local Area Network LAWN Local Area Wireless Network
LB Left Button LBL Label
LBR Librarian LBT Listen Before Talking
LCD Liquid Crystal Display LDC Lotus Development Corporation
LED Light Emitting Diode LEM Language Extension Module
LEX Lexicon LF Line Feed
LFU Least Frequently Used LIFO Last In First Out
LILO Last In Last Out LIM Lotus/Intel/Microsoft
LIMA Lotus/Intel/Microsoft/AST LIMS Library Information Management System
LISP List Processing (Language) LLC Logical Link Control
LLFF Low level file functions LM/X LAN Manager for Unix
LMI Local Management Interface LN Logarithm (Natural)
LNDI Lotus Notes:Document Imaging LOC Loop On-Line Control
LOG Logarithm (Base 10) LOGO (Programming Language)
LOL Laugh Out Load LORE Line Oriented Editor
LPD Line Printer Daemon (protocol) [Berkley] LPI Lines Per Inch
LPL Lotus Programming Language [Lotus 1-2-3] LPM Lines Per Minute
LPN Logical Page Number LPT Line Printer
LPT1 First Parallel Printer Port LPT2 Second Parallel Printer Port
LPT3 Third Parallel Printer Port LQ Letter Quality
LR Language Reference manual LRC Longitudinal Redundancy Check
LRU Least Recently Used LSA Line Sharing Adapter
LSI Large Scale Integration LST List
LTR Letter LU Logical Unit
LUT Lookup Table

AccDefinition AccDefinition
M$ Microsoft
MAC Media/Medium Access Control MAN Manual
Metropolitan Area Network
MAP Maintenance Analysis Procedures
Manufacturing Automation Protocol
Memory Allocation Map 		MAPI Mail/Messaging Applications Programming Interface [Microsoft]
MAPICS Manufacturing Accounting and Production Information Control System [IBM] MASM Macro Assembler [Microsoft]
MAX Maximum MB Megabyte (1 000 kilobytes)
Middle Button (of 3 button Mouse)
MBASIC Microsoft BASIC [Microsoft] MBPS Megabytes Per Second
MBX Mailbox MCA Micro Channel Architecture [IBM]
MCB Memory Control Block MCI Media Control Interface [Microsoft]
MCL Microsoft Compatibility Labs [Microsoft] MD Make Directory
Monochrome Display
MDA Monochrome Display Adapter MDI Multiple Document Interface
MDK Multimedia Developers Kit [Microsoft] MDR Minimum Design Requirement
MDY Month Day Year MEB Memory Expansion Board
MEG Megabyte MFFS Microsoft Flash File System [Microsoft]
MFLOPS Million Floating Point Operations Per Second MFT Multiprogramming with a Fixed number of Tasks
MGA Monochrome Graphics Adapter MGR Manager
MHS Message Handling Service
Message Handling System 		MHZ Megahertz
MIDI Musical Instrument Digital Interface MIME Multipurpose Internet Mail Extension [Internet]
MIN Minimum MIPS Million Instructions Per Second
MIS Management Information System MISC Miscellaneous
ML Machine Language MM Minutes
Month
MMI Man Machine Interface MMU Memory Management Unit
MNP Microcom Networking Protocol MOD Modem
Modulus
MODEM Modulator Demodulator MOHLL Machine Oriented High Level Language
MP Multiple Processors MPC Multimedia Personal Computer
MPEG Moving Picture Experts Group MPP Massively Parallel Processing
Message Processing Program
Microcom Network Protocol [Microcom]
MPU Microprocessor Unit MRI Magnetic Resonance Imaging
MRP Materials Requirement Planning MRT Mean Repair Time
MS Memory System
Message Store
Microsecond
Microsoft Corporation
Millisecond 		MS-DOS Microsoft-Disk Operating System [Microsoft]
MSB Most Significant Bit MSCDEX Microsoft CD Extensions [Microsoft]
MSD Mass Storage Device
Most Significant Digit 		MSG Message
MSI Medium Scale Integration MSL Map Specification Library
MTA Message Transfer Agent
Multiple Terminal Access 		MTBB Mean Time Between Breakdowns
MTBF Mean Time Between Failures MTS Message Transfer Service/System
MTTF Mean Time To Failure MTTR Mean Time To Repair
MTU Maximum Transmission Units MU Multi-user
MUMPS Massachusetts General Hospital Utility Multi-Programming System (Programming Language) MUX Multiplexer
MVDM Multiple Virtual DOS Machines MVGA Monochrome Video Graphics Array
MVP Most Valuable Professional MVS Multiple Virtual Storage [IBM]
MVT Multiple Variable Tasks [IBM] MX Mail Exchanger [Internet]

AccDefinition AccDefinition
NACD National Association of Computer Dealers
NAS Network Application Support [DEC] NASA National Aeronautics and Space Administration
NBI Nothing But Initials NBS National Bureau of Standards
NC Numerical Control NCA Network Communications Adapter
NCC Network Control Center NCGA National Computer Graphics Association
NCIC National Crime Information Center NCP Network Control Program
Not Copy Protected
NCR National Cash Register (Company) NCSI Network Communications Services Interface [Novell]
NDA Non Disclosure Agreement NDEF Not Defined
NDIS Network Driver Interface Specification NDP Numeric Data Processor
NEC Nippon Electric Company NEG Negative
NFF No Fault Found NFS Network File System
NG No Good NHC National Hurricane Center
NIC Network Information Center [Internet] NICAD Nickel Cadmium
NID New Interactive Display [NEC]
Next ID 		NIPS Network I/Os Per Second
NISO National Information Standards Organization NIST National Institute for Standards and Technology
NJE Network Job Entry [IBM] NL New Line
NLE Not Less or Equal NLM NetWare Loadable Module [Netware]
NLQ Near Letter Quality NLS National Language Support [OS/2]
NMI Non-Maskable Interrupt NMOS Negative Channel Metal-Oxide Semiconductor
NMS Network Management System [Novell] NNTP Network News Transfer Protocol [Internet]
NOC Network Operations Center NOP No Operation
NOR Not Or NOS Network Operating System
NPA Network Printer Alliance NPI Network Printer Interface
NPL Nonprocedural Language NREN National Research and Education Network
NRZ Not Return to Zero NRZI Non Return to Zero Inverted
NS Nanosecond
Network Supervisor
Non Stop 		NSA National Security Agency
NSF National Science Foundation NSTL National Software Testing Labs
NT Windows NT NT New Technology [Microsoft]
NTF No Trouble Found NTFS New Technology File System [Microsoft]
NUI Network User Identification
Network User Interface
Notebook User Interface [Go Corporation] 		NUL Dummy Device
No Device
NVM Non-Volatile Memory NVRAM Non-Volatile Random Access Memory
NetBEUI NetBIOS Extended User Interface [IBM] NetBIOS Network Basic Input/Output System [IBM]

AccDefinition AccDefinition
OAG Official/Online Airline Guide OAI Open Applications Interface
OBJ Object OCL Operater Control Language
OCR Optical Character Recognition ODA Office Document Architecture
ODAPI Open Database Application Programming Interface [Borlund] ODBC Open Database Connectivity
ODBC Open Database Connectivity (driver) [Microsoft] ODBMS Object-Oriented Database Management System
ODI Open Datalink Interface [Novell] ODS Open Data Services [Microsoft]
OEM Original Equipment Manufacturer OH Off Hook
OIC Oh I see OIS Office Information Systems
OKL On key label OLE Object Linking and Embedding [Microsoft]
OLI Optical Phone Line Interface [AT&T] OLTP On-Line Transaction Processing
OMF Object Module Format [Microsoft] OMG Object Management Group
OMI Open Messaging Interface [Lotus] OMNS Open Network Management System
OMR Optical Mark Recognition ONC Open Network Computing [Sun]
OO(P) Object oriented (programming) OOAD Object Oriented Application Design/Development
OODB Object-Oriented Database OOL Object-Oriented Language
OOP Object Oriented Programing OOPL Object-Oriented Programming Language
OOPS Object Oriented Programming and Systems OOS Object-Oriented Systems
Off-line Operating Simulator
OP Operation
Optical
Output 		OP CODE Operational Code
OPAC Online Public Access Catlog [Internet] OPD Operand
OPI Open Prepress Interface OPM Operations Per Minute
OPS Operations OPT Open Protocol Technology
ORACLE On-Line Inquiry and Report Generator (UNIX DB program) ORS Output Record Separator
OS Operating System OS/2 Operating System Two [IBM]
OS/E Operating System/Environment OSA Open System Architecture
OSF Open Software Foundation OSI Open Systems Interconnection
OSM Off-Screen Model OSPF Open Shortest Path First
OSQL Object Structured Query Language OT Object Technology
OTOH On the other hand OWL Object/Open Windows Library

AccDefinition AccDefinition
P-SRAM Pseudo-Static Random Access Memory P/T Part Time
PABX Private Automatic Branch Exchange PAD Packet Assembler/Disassembler
PADS Pen Application Development System [Slate Corporation] PAL Programming Assembly Language
PAR Parallel PARA Paragraph
PARC Palo Alto Research Center [XEROX] PASCAL Programming Language named for Blaise Pascal inventor of the 1st computing engine
PBX Private Branch Exchange PC Personal Computer
PC-DOS Personal Computer - Disk Operating System (IBM version of MSDOS) PC-I/O Program Controlled I/O
PCB Printed Circuit Board
Program Control Block 		PCI Peripheral Component Interconnect [Intel]
PCL Printer Command Language [HP]
Process Control Language 		PCM Personal Computer Manufacturer
PCMCIA Personal Computer Memory Card International Association PCMIA PC Memory-Card International Association
PCNFS Personal Computer Network File System PCS Patchable Control Store
Planning Control Sheet
Print Contrast Signal
Process Control Systems
Program Counter Store
Programmable Drive Table
Project Control System
PD Public Domain PDA Personal Digital Assistant
PDF Program Development Facility PDL Page Description Language
Program Description Language
Program Design Language
PDN Public Data Network PDS Partitioned Data Set
PDT Programmable Drive Table PE Parity Even
Protect Enable
PEL Picture Element [IBM] PEM Properties/Events/Methods
PERT Program Evaluation and Review Technique PGDN Page Down
PGM Program PGUP Page Up
PI Program Interruption PIA Peripheral Interface Adapter
PIC Priority Interrupt Controller
Program Interrupt Controller 		PID Process Identification Number
PIF Program Information File PILOT Programmed Inquiry Learning Or Teaching
PIM Personal Information Manager PIN Personal Identification Number
PIO Parallel Input/Output
Processor Input/Output
Programmed Input/Output 		PIP Picture In Picture
Programmable Interconnect Point
PIPO Parallel In Parallel Out PIT Programmable Interval Timer
PITA Pain In The Accronym (among other possibilities) PIXEL Picture Element
PL/1 Programming Language One [IBM] PL/M Programming Language for Micros [INTEL]
PLA Programmable Logic-Array PLATO Programmed Logic for Automatic Teaching Operations
PLC Programmable Logic Controller PLD Programmable Logic Device
PLL Phase Locked Loop PM Presentation Manager [IBM]
Preventative Maintenance
PMFJI Pardon Me For Jumping In PMFJOT Pardon Me For Jumping Off Topic
PMMU Paged Memory Management Unit PMOS Positive Channel Metal Oxide Semiconductor
PO Parity Odd POL Problem Oriented Language
POOP Proper object oriented programming ("If it's not POOP it's crap") POP Point Of Presence [MCI]
Pop from Stack
Post Office Protocol
POS Point Of Sale
Positive
Programmable Object Select 		POSIX Portable Oprating System Environment Standard [IEEE]
POST Power-On Self Test POSTNET Postal Numeric Encoding Technique
POV Point of view PPDS Personal Printer Data Stream [IBM]
PPM Pages Per Minute PPP Point-to-Point Protocol [Internet]
PRG Program file PRMD Private Mangement Domain [X.400}
PRN Printer PROC Procedure
PROFS Professional Office System [IBM] PROG Program
Programmer
PROLOG Programming In Logic (Programming Language) PROM Programmable Read Only Memory
PRTSC Print Screen PS Proportional Spacing
PS/2 Programming System 2 [IBM] PSC Product Service Center
PSF Permanent Swap File PSP Program Segment Prefix
PSW Program Status Word PT Page Table
PTD Parallel Transfer Disk Drive PUB Publication
Publish
PWB Printed Wire Board
Programmer's Workbench [Microsoft] 		PWR Power

AccDefinition AccDefinition
QA Quality Assurance QBE Query By Example
QC Quality Control QDOS Quick and Dirty Operating System
QIC Quarter-Inch Cartridge

AccDefinition AccDefinition
R&D Research and Development
R-O Read Only R/W Read/Write
RA Return Authorization RACF Resource Access Control Facility
RAD Rapid Application Development RAID Redundant Arrays of Independent Disks
RALU Register Arithmetic Logic Unit RAM Random Access Memory
RAND Random RAP Rapid Application Prototyping
RAS Reliability Availability and Serviceability RB Right Button (of 2 or 3 button Mouse)
RBBS Remote Bulletin Board System RCS Records Communications Switching System
RD Receive Data RDA Remote Database Access
RDB Relational Data Base RDBMS Relational DataBase Management System
REG Register REM Remark
Remote
REQ Request RES Reset
Resolution
RES Remote Execution Service RET Return
REXX Restructured Extended Executor (language) [IBM] RFC Request For Comments [Internet]
RFP Request for Proposal RFS Remote File System
RFT Rich Text Format RFU Reserved For Future Use
RI Referential Integrity RI Referential Integrity
RIFF Resource Interchange File Format [Microsoft] RIITTSS Reality Impaired Individuals with Tendencies Toward Satiric Surrealism
RIM Remote Installation and Maintenance [Microsoft] RISC Reduced Instruction Set Computer
RJE Remote Job Entry RMA Return Material/Manufacturer Authorization
RMON Remote Monitor/Monitoring RMS Record Management Services
Root Mean Square
RND Random ROFL Roll On the Floor Laughing
ROM Read Only Memory RPG Report Program Generator (Programming Language)
RPQ Request for Price Quotation RPT Repeat
RQBE Relational Query By Example [Fox Pro] RSCS Remote Spooling Communications System
RSN Real soon now (AKA "hold your breath") RST Reset
RSTS Resource Sharing Time Sharing [Digital] RSX Real Time Resource Sharing Executive
RT Real Time
RISC Technology
Run Time 		RTAM Remote Terminal Access Method
RTC Real-Time Clock RTF Rich Text Format
RTFM Read The Ficticious/Fabulous/Funky Manual RTL Register Transfer Language
Resistor Transistor Logic
Run Time Library
RTM Response Time Monitor RTOS Real-Time Operating System
RTS Request To Send RTTY Radio Teletypewriter (Communications)
RW Report writer RWM Read-Write Memory

AccDefinition AccDefinition
S/H Sample and Hold S/N Signal-to-Noise (Ratio)
S/W Software SAA Systems Application Architecture [IBM]
SADL Synchronous Data Link Control [Racal-Vadic] SAS Sales Accounting System
SB Sound Board SBC Single-Board Computer
SBCS Single-Byte Character Set SCC Serial Communications Controllers
Serial Controller Chip
Synchronous Channel Check [IBM]
SCD Standard Color Display SCF System Control Facility
SCM Software Configuration Management SCO Santa Cruz Operation (Software Company)
SCOPE Simple Communications Programming Enironment [Hayes] SCP Save Cursor Position
Subsystem Control Port
System Control Program
SCR Silicon Controlled Rectifier SCRN Screen (video display)
SCSI Small Computer Systems Interface SD Send Data
SDA Software Disk Array
Source Data Automation
System Display Architecture [Digital] 		SDF Space Delimited File
Space Delimited Format
SDK Software Developer's Kit [Microsoft] SDLC Synchronous Data Link Control (protocol)
SDN Software Defined Network [AT&T] SDNS Secure Data Network Service
SDR Streaming Data Request SDS Sysops Distribution System
SEA Standard Extended Attribute [OS/2] SEAC Name of first computer to use transistors built by Standard Eastern Automating Computing
SEC Single Error Correction SECAM Sequential Color And Memory
SED Stream Editor SEG Segment
SEL Select SEM Scanning Electron Microscope
Standard Electronic Module
SER Serial SET Softwave Engineering Technology
SEU Smallest Executable Unit SFQL Structured Full-text Query Language
SFT System Fault Tolerance SFX Sound Effect(s)
SGDT Store Global Descriptor Table SGEN Signal Generator
System Generator
SGML Standard Generalized Markup Language SGR Set Graphics Rendition
SI Source Index
System Information 		SID Station Identification [AT&T]
Symbolic Interactive Debugger
SIDT Store Interrupt Descriptor Table SIG Special Interest Group
SIM Simulator SIMD Single Instruction Multiple Data Stream (processor)
SIMM Single In-line Memory Module SIMULA Simulation (language)
SIP Single In-line Package SIPO Serial In Parallel Out
SIPP Single In-line Pin Package SISO Serial In Serial Out
SIT Special Information Tones SLDT Store Local Descriptor Table
SLIP Serial Line Interface Protocol SLMR Silly Little Modem Reader
SLSI Super Large-Scale Integration SM Set Mode
SMB Server Message Block (protocol) [MII] SMD Surface Mounted Device
SMDS Switched Multi-Megabit Data Service SMF System Manager Facility [Compaq]
SMI System Management Interrupts [Intel] SMIF Standard Mechanical Interface
SMK Software Migration Kit [Microsoft] SMM System Mangement Mode
SMP Symbolic Manipulation Program
Symmetrical Multiprocessor (machine) 		SMPS Switching Mode Power Supply
SMRAM System Management Random Access Memory SMSW Store Machine Status Word
SMT Surface-Mount Technology SMTP Simple Mail Transfer Protocol
SMU System Management Utility SN Serial Number
SNA Systems Network Architecture [IBM] SND Sound
SNMP Simple Network Management Protocol SNOBOL String Oriented Symbolic Language (Progamming Language)
SNP Serial Number/Password [Omen Technology] SNR Signal-to-Noise Ratio
SOC System On a Chip SOE Standard Operating Environment
SOH Start of Heading SOL Simulation Oriented Language
SOM Start of Message
System Object Model [IBM] 		SOP Standard Operating Procedures
SOS Silicon On Sapphire
Standards and Open Systems 		SOTA State Of The Art
SOX Sound Exchange SP Stack Pointer
System Product
SPA Software Publishers Association SPARC Scalable Processor Architecture
SPC Small Peripheral Controller
Statistical Process Control 		SPCL Spectrum Cellular Corporation
SPF Shortest Path First
System Programming Facility 		SPI Service Provider Interface
SPIKE Science Planning Intelligent Knowledge-Based Environment [STScI] SPL Spooler
SPOOL Simultaneous Peripheral Operations On Line SPS Standby Power System
SPSS Statistical Package for the Social Sciences SPT Sectors Per Track
SPX Sequenced Packet Exchange [Novell] SQ Squeezed (files)
SQL Structured Query Language SQRT Square Root
SRAM Shadow Random Access Memory
Static Random Access Memory 		SRD Screen Reader System
SRO Sharable and Read Only
Standing Room Only 		SRQ Service ReQuest
SRR Serially Reusable Resource SS Stack Segment
Single Sided
Seconds
SSEC Selective Sequence Electronic Calculator [IBM] SSGA System Suppport Gate Array
SSI Small Scale Integration SST Spread-Spectrum Technology
STA Spanning Tree Algorithm STB Strobe
STD Standard STDA StreetTalk Directory Assistance [Banyan]
STDAUX Standard Auxillary STDERR Standard Error
STDIN Standard Input STDOUT Standard Output
STDPRN Standard Printer STP Shielded Twisted Pair (cable)
Signal Transfer Point
STR Store Task Register
Synchronous Transmitter Receiver 		STRESS Structural Engineering System Solver (Programming Language)
STRUDL Structural Design Language (Programming Language) STX Start of Text
SU Single user SUB Subroutine
Substitute
Subtract
SVGA Super Video Graphics Array SYNC Synchronous
SYS System SYSGEN System Generator
SYSLOG System Log SYSMOD System Modification
SYSOP System Operator SYSREQ System Request

AccDefinition AccDefinition
T/B Top and Bottom TAD Telephone Answering Device
TAPCIS The Access Program for the CompuServe Information Service TASM Turbo Assembler [Borland]
TAXI Transparent Asynchronous Tranceiver Interface TB Terabyte (1 000 gigabytes)
TCP/IP Transmission Control Protocol/Internet Protocol TD Transmit Data
TDE Terminal Display Editor TDM Time Division Multiplexing
TDMS Terminal Display Management System TDR Time Domain Reflectometry
TDSR Transmitter Data Service Request TE/2 Terminal Emulator/2 [Oberon]
TEC Tokyo Electronics Corporation TED Tiny Editor
TEML Turbo Editor Macro Language [Borlund] TERMPWR Terminator Power
TFDD Text File Device Driver TFT Thin-Film Transistor (screens)
THOR Tandy High-Performance Optical Recording TI Texas Instruments Inc.
TIA Thanks In Advance TID Target ID
TIES Time Independent Escape Sequence TIFF Tagged Image File Format
TIGA Texas Instruments Graphics Architecture TIGER Topologically Integrated Geographic Encoding and Referencing
TIP Terminal Interface Processor TLB Translation Lookaside Buffer
TLI Transport Layer Interface TLU Table Lookup
TM Trademark TMP Temporary
TN Twisted Nematic TNC Terminal Node Controller
TOP Technical and Office Protocol TP Transaction processing
TPC Transaction Processing Performance Council TPI Tracks Per Inch
TPL Table Producing Language TPM Transactions Per Minute
TPORT Twisted Pair Port Transceiver [AT&T] TPS Transaction Processing System
TPW Turbo Pascal for Windows TQM Total Quality Management
TR Terminal Ready TRON The Real-Time Operating System Nucleus
TS Top Secret
Time Stamp 		TSA Technical Support Alliance
TSB Termination Status Block TSO Time Sharing Option
TSR Terminate Stay Resident Program TSS Task State Segment
Time Sharing System
TTL Transistor-Transistor Logic TTS Transaction Tracking System
TTY Teletype TUI Text-Based User Interface [WordPerfect]
TWX Teletypewriter Exchange Service TXD Transmitted Data
TXT Text

AccDefinition AccDefinition
UA User Agent
User Area
UAE Unrecoverable Application Error UART Universal Asynchronous Receiver/Transmitter
UCL Universal Communications Language UDC User Defined Commands
UDF User Defined Functions UDP User Datagram Protocol
UG User's Group UI Unix International
UID User Identifier UL Upload
ULSI Ultra Large Scale Integration UMB Upper Memory Block [LIM/AST]
UNC Universal Naming Convention UNICOM Universal Integrated Communication System
UNIVAC Universal Automatic Computer UNIX AT&T Bell Laboratories Operating System
UPC Universal Product Code UPL User Program Language
UPS Uninterruptible Power Supply USART Universal Synchronous-Asynchronous Reciever/Transmitter
USERID User Identification USR US Robotics Inc
USRT Universal Synchronous Receiver/Transmitter UT User Terminal
Universal Thread
UTI Universal Text Interchange UTP Unshielded Twisted-Pair cable
UUCP Unix-To-Unix Copy Program UUI User-To-User Information [AT&T]
UV Ultraviolet

AccDefinition AccDefinition
VA Virtual Address
VAD Value Added Dealer VAL Value
Voice Application Language
VAM Virtual Access Method VAN Value Added Network
VAP Value Added Processes VAR Value Added Reseller
Value Added Retailer
Variable
VAX/VMS Virtual Address Extension/Virtual Memory System [DEC] VB Variable Block
Visual Basic [Microsoft]
VCD Virtual Communications Driver VCPI Virtual Control Program Interface
VCR Video Cassette Recorder VDD Virtual Device Driver
VDDM Virtual Device Driver Manager VDE Video Display Editor
VDISK Virtual Disk VDM Virtual DOS Machine [IBM]
VDS Virtual DMA Services VDT Video Display Terminal
VDU Video Display Unit
Visual Display Unit 		VEMM Virtual Expanded Memory Manager
VER Verify
Version 		VESA Video Electronics Standards Association
VFOX Visual FoxPro VFP Visual FoxPro
VFPYP Visual FoxPro Yellow Pages
VGA Video Graphics Array VGC Video Graphics Controller
VHS Very High Speed
Virtual Host Storage 		VHSIC Very High Speed Integrated Circuit
VIM Vendor Independent Messaging (interface) VINES Virtual Network Operating System [Banyan]
VIO Video Input/Output
Virtual Input/Output 		VIP Variable Information Processing
VIPER Verifiable Integrated Processor for Enhanced Reliability VL-BUS Vesa Local-Bus [VESA]
VLF Very Low Frequency VLSI Very Large Scale Integration
VLT Variable List Table VM Virtual Machine
VMB Virtual Machine Boot VMM Virtual Memory Manager
VMOS Vertical MOS VMS Virtual Memory System
Voice Message System
VMT Virtual Memory Technique VOL Volume
VOM Volt Ohm Meter VPD Virtual Printer Device
VPDS Virtual Private Data Service [MCI] VR Voltage Regulator
VRAM Video Random Access Memory VROOMM Virtual Real-time Object Oriented Memory Manager [Borlund]
VRU Voice Response Unit VS Virtual Storage
VSAM Virtual Storage Access Method VSE Virtual Storage Extended
VSLI Very Large Scale Integration VSM Virtual Storage Management
VSOS Virtual Storage Operating System VTAM Virtual Telecommunications Access Method [IBM]

AccDefinition AccDefinition
W/O Without WAIS Wide Area Information Server/Service
WAITS Wide Area Information Transfer System WAN Wide Area Network
WATS Wide Area Telecommunications Service WC Word Count
WFW Windows For Workgroups [Microsoft] WGS Work Group System
WIN Windows (often has 3.1/95/NT after it) WINWORD Word For Windows [Microsoft]
WISE WordPerfect Information System Environment WNIC Wide-Area Network Interface Co-Processor
WNIM Wide-Area Network Interface Module WORM Write Once Read Many
WOSA Windows Open Services Architecture [Microsoft] WP WordPerfect
Word Processing
Write Protected
WPHD Write-Protect Hard Disk WPM Words Per Minute
WPS Windows Printing System [Microsoft]
Workplace Shell [OS2] 		WS WordStar
Workstation
WT Write Through WYSIWYG What You See Is What You Get
WYWO While You Were Out

AccDefinition AccDefinition
XA Extended Architecture
Extended Attribute 		XAPIA X.400 Application Program Interface Association
XIOS Extended Input/Output System XLAT Translate
XMIT Transmit XMM Extended Memory Manager [LIM/AST]
XMS Extended Memory Specification [LIM/AST] XNS Xerox Network System (protocol) [Xerox]
XOFF Transmitter Off XON Transmitter On
XOR Exclusive OR XSMD Extended Storage Module Drive (interface)
XTAL Crystal XTCLK External Transmit Clock

AccDefinition AccDefinition
YAcc Yet another ... [as in YACC Yet Another Compiler Compiler]

AccDefinition AccDefinition
ZBB Zero Based Budget (imaginary budgeting process) ZDS Zenith Data Systems
ZIF Zero-Insertion Force (socket) ZIP Zigzag In-Line Package
Zone Improvement Plan (ZIPcode)

ExtFile TypeExtFile Type
.$$$ Temporary File .ADF Adapter Description File [IBM]
.ADN Add In Utility [Lotus 1-2-3] .AFM Adobe Font Metrics [Adobe Systems]
.APP Application [R:Base] .ARC Archive
.ASC ASCII text .ASM Assembler Source Language
.BAK Backup .BAS Basic Language
.BAT Batch Processing .BGI Borland Graphic Interface
.BIB Bibliography .BIN Binary
.BK Backup [WordPerfect] .BLD BASIC Bload Graphics
.BMP Bitmap Graphics [Windows] .C C source code
.CAT Catalog .CBL COBOL source code
.CDF Comma Delimited Format .CDX Compound Index [Fox Pro]
.CFG Configuration .CGM Computer Graphics Metafile
Graph [Lotus 1-2-3]
.CHK CHKDSK .CLP Clipboard [Windows]
.CMD Command .CNF Configuration
.COB COBAL source code .COD Code List
.COM Command .CPI Code Page Information [MS-DOS]
.CRD Cardfile .CUR Cursor
.DAT Data .DBF Database
.DCT Dictionary .DEF Definitions
Defaults
.DEM Demonstration .DES Description
.DHP Dr. Halo PIC .DIC Dictionary
.DOC Document
Documentation 		.DRS WordPerfect Driver Resource
.DRV Device Driver .DRW Draw
Drawing
.DTA Data .DV DESQview Script
.DVR Device Driver .DXB Drawing Interchange Binary [AutoCAD]
.EML Electronic Mail .ENC Encoded
.EPS Encapsulated PostScript .EXE Executable
.FAX Fax .FON Font
Phone
Phone Directory
.FOR FORTRAN source code .FRS WordPerfect Graphics Driver
.GIF Graphic Interchange Format .GLY Glossary [Microsoft Word]
.GRF Graph .GRP Group
.H Header [C] .HLP Help
.HST History
Host 		.HYP Hyphenation
.ICO Icon .IDX Index
.INF Information .INI Initialize
.LBR Library .LET Letter
.LIB Library .LRS Language Resource [WordPerfect]
.LST List .MAC MacPaint
Macro
.MAI Mail .MAP Linker Map
.MDF Menu Definition File .ME Information file as in READ.ME
.MEN Menu .MNU Menu
.MSG Program Message .MSP Microsoft Paint [Microsoft]
.NDX Index .NEW New Information
.OLD Old version .OPT Options
.ORI Original .OUT Outlines
.OVL Program Overlay .OVR Program Overlay
.PAK Packed .PAS PASCAL source code
.PAT Patch .PCT Picture
.PCX Picture Image .PDF Printer Description [Borlund Lotus]
.PDX Paradox files [Borland] .PFM Printer Font Metrics [Windows]
.PGL Graphics [Hewlett-Packard] .PGP ProGram Parameter [AutoCAD]
.PHO Phone or Photo List .PIC Graph [Lotus 1-2-3]
.PLL Prelinked Library [Clipper] .PRD Printer Driver [Word]
.PRF Preferences [Grammatik IV] .PRO Profile
.PRS Printer [WordPerfect] .PS PostScript
.PUB Publication [Ventura] .PX Primary Index [Paradox]
.QDI Dictionary [Quicken] .QDT Data [Quicken]
.QIF Quicken Interchange Format .QMT Memorized List [Quicken]
.QNX Indexes to Data [Quicken] .REC Recorder
.REF Reference .RES Resource
.SAV Saved .SCR Script
.SDF Standard Data Format .SET Driver Set [Lotus 1-2-3]
Image Settings [Paradox]
.SPL Spell Checker .STF Structured File [Lotus Agenda]
.STY Style [Ventura Word WordPerfect] .SUP Supplemental Dictionary [WordPerfect]
.SWP Swap .SYM Symbols
.SYN Synonym .SYS System Configuration
.TBK Toolbook .TDF Trace Definition File [OS/2]
Typeface Definition File
.TFM Tagged Font Metric .THD Thread
.THS Thesaurus .TIF Tagged Image File
.TLX Telex .TRM Terminal
.TST Test .TTF TrueType Font
.TUT Tutorial .VAL Validity Checks [Paradox]
.VRS WordPerfect Graphics Driver .WAV Waveform Audio
.WK1 Worksheet [Lotus 1-2-3] .WKB Workbook [WordPerfect]
.WKE Worksheet [Lotus 1-2-3] .WKQ Spreadsheet
.WKS Worksheet [Lotus 1-2-3] .WKZ Compressed Spreadsheet
.WMF Windows Metafile [Microsoft] .WPG Graphics [WordPerfect]
.WPK Keyboard [WordPerfect] .WPM Macro [WordPerfect]
.WQ Compressed Spreadsheet .WQ1 Spreadsheet
.ZIP Compressed File [PKWare] .ZOO Compressed File

SymDefinitionSymDefinition
<bg> Big Grin <d> Duck (from the target of your joke -- usually Tom)
<eg> Evil Grin <g> Grin
<gd&r> Grin Duck && Run (from the target of your joke) <gd&rvvf> gd&r Very Very Fast
<rbg> Really Big Grin <roc l> The comment was so funny you're rocking on your chair (couch ceiling) laughing
<rof l> The comment was so funny you're rolling on floor laughing <s> Smile

DevTeach 2004 - Video 3
DevTeach 2003 - Video 4
DevTeach 2003 - Video 12
DevTeach 2005 - Video 1

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