FAB Computer-Chip Fabrication Plant FAC File Access Code FAMOS Floating Gate Avalanche MOS FAP File Access Protocol FAPI Family Application Program Interface FAQ Frequently Asked Question FARNET Federation of American Research Networks [Internet] FAT File Allocation Table FAX Facsimile .FAX Fax (file name extension) FC/AL Fiber Channel/Arbitrated Loop FCB File Control Block FCC Federal Communications Commission FCC: File Carbon Copy FCCSET Federal Coordinating Council for Science, Engineering and Technology FCI Flux Changes per Inch FCS Fiber Channel Standard + Frame Check Sequence FD Floppy Disk + Floppy Drive + Full Duplex FDC Floppy Disk Controller FDDI Fiber Digital Device Interface + Fiber Distributed Data Interface FDISK Fixed Disk FDM Frequency-Division Multiplexing FDX Full Duplex FED Field-Emitter Display FEFO First-Ended, First-Out FEP Front End Processor FEPI Front End Programming Interface FESDK Far East Software Development Kit [Microsoft] FET Field Effect Transistor FF Flip-Flop + Form Feed FFDC First Failure Data Capture [IBM] FFS Fast File System FFST First Failure Support Technology [IBM] FFT Fast Fourier Transform + Final Form Text [IBM] FIF Fractal Image Format FIFO First-In, First-Out FILO First-In, Last-Out FIP File Processor Buffering FIPS Federal Information Processing Standard FIR Finite Impulse Response FIX Federal Internet Exchange FLC Ferro-electric Liquid Crystal FLD Field FLL FoxPro Link Library [Microsoft Fox Pro] FLOPS Floating Point Operations Per Second FMS Forms Management System FMT Format FNT Font FOCUS Forum of Control Data Users FOG First Osborne Group FOIRL Fiber Optic Inter Repeater Link [IEEE] .FON Font + Phone + Phone Directory (all file name extensions) .FOR Fortran source code (file name extension) FORTH (Programming Language)(See HLL) FORTRAN Formula Translator (Programming Language)(See HLL) FOSE Federal Office Systems Exposition FOSI Format Option Specification Instance FOSSIL Fido/Opus/Seadog Standard Interface Layer FPC Floating Point Calculation FPCE Floating-Point C Extension (specification) FPGA Field Programmable Gate-Array FPLA Field Programmable Logic-Array FPP Fixed Path Protocol + Floating Point Processor FPR Floating-Point Register FPS Favorite Picture Selection + Frames Per Second FPT Forced Perfect Termination FPU Floating Point Unit FQDN Fully Qualified Domain Name [Internet] FRAG Fragment + Fragmentation FRAM Ferroelectric Random-Access Memory FRC Funtional Redundancy Checking FRED Frame Editor + Front-End to Dish FRPI Flux Reversals Per Inch .FRS WordPerfect Graphics Driver (file name extension) FS File Separator FSD File System Driver [OS/2] FSE Full Screen Editor FSF Free Software Foundation [Internet] FSK Frequency Shift Keying FSN Full Service Network FSP File Service Protocol FSR Free System Resources FST Flat Square Tube (monitor) F/T Full Time FTAM File Transfer, Access and Management + File Transfer and Access Method FTM Flat Tension Mask [Zenith] FTP File Transfer Protocol [Internet] FTPD File Transfer Protocol Daemon FTS Federal Telecommunication System FUI File Update Information FUNC Function FVT Full Video Translation FYI For Your Information
GA General Availability
GAAP Generally Accepted Accounting Principles
GAL Generic Array Logic
GAPI Gateway Application Programming Interface
Gb Gigabit (1,000 megabits) +
(One Billion Bits of Information)
GB Gigabyte (1,000 megabytes) +
(One Billion Characters of Information)
GCR Group Code Recording
GDA Global Data Area
GDDM Graphics Data Display Manager
GDG Generation Data Group [IBM]
GDI Graphical Device Interface
GDLC Generic Data Link Control [IBM]
GDP Graphic Draw Primitive
GDT Geometric Dimensioning and Tolerancing +
Global Descriptor Table
GECOS General Electric Comprehensive Operating System
GEIS General Electric Information Service (company)
GEM Graphics Environment Manager (DRI Program)
GENIE General Electric Network for
Information Exchange
GEO Geostationary Earth Orbit
GEOS Graphic Environment Operating System [Geoworks]
GET Get Execute Trigger
GGP Gateway-Gateway Protocol [Internet]
GHZ Gigahertz
.GIF Graphics Interchange Format (file name extension)
GIGO Garbage In, Garbage Out
GIS Geographic Information System +
Global Information Solutions [AT&T]
GIX Global Internet Exchange [Internet]
GKS Graphical Kernal System
GL Graphics Language
G/L General Ledger
GLIS Global Land Information System [US Geological Survey]
GLM General Linear Models
GLOBE Global Learning by Observations to Benefit
the Environment [Internet]
.GLY Glossary (file name extension) [Microsoft Word]
GMP Global Mobile Professional
GMS Global Management System +
Global Messaging Service [Novell]
GMT Greenwich Mean Time
GND Ground (signal/system)
GNN Global Network Navigator [Internet]
GNU Gnu's Not Unix (operating system)
GOSIP Government Open Systems Interconnection Profile
GOV Government (organization Domain name) [Internet]
GP Gas Plasma + General Purpose
GPF General Protection Fault
GPI Graphics Programming Interface
GPIB General Purpose Interface Bus
GPR General Purpose Register [IBM]
GPS Global Positioning Satellite/System
GPSS * General Purpose Systems Simulator (language)
GRE Graphics Engine
GREP Global Regular Expression Print
.GRF Graph (file name extension)
.GRP Group (file name extension)
GS Group Separator
GSI General Server Interface
GSM Global Shared Memory +
Global System for Mobile-Communications (network)
GTE General Telephone Electronics (corporation)
GTL Gunning Transceiver Logic
GTO Guide To Operations [IBM]
GUI Graphical User Interface
GVT Global Virtual Time
GW-BASIC Gee Whiz BASIC
.gz Compressed file (compressed filename extension -
using GNU gzip compression/decompression program) [Unix]
.H Header (file name extension) [C]
HACMP High Availability Cluster Multi-Processing [IBM]
HAL Hard Array Logic + Hardware Abstraction Layer +
House-Programmed Array Logic
HAL * Heuristically Programmed Algorithmic (computer)
[from 1968 movie "2001: A Space Odyssey"]
HASP Houston Automatic Spooling Priority (System)
HBA Host Bus Adapter
HCSS High Capacity Storage System
HCU Home Computer User
HD Hard Disk + High Density
HDA Head Disk Assembly
HDCD High Definition Compatible Digital
HDF Hierarchical Data Format [NCSA]
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
HDT Host Digital Terminal
HDTV High Definition Television
HDVD High Definition Volumetric Display
HDW Hardware
HDX Half Duplex
HERC Hercules
HEX Hexadecimal
HFC Hybrid Fiber-Coaxial
HFS Hierarchical File System [Macintosh]
HFT High Function Terminal [IBM]
HGA Hercules Graphics Adapter
HGCP Hercules Graphics Card Plus
HH Hour
HIFD High-Density Floppy Disk
HIL Human Interface Link [HP]
HIMEM High Memory
HIPPI High Performance Parallel Interface
HLCO High Low Close Open
HLL High Level Language
HLLAPI High Level Language Application Programming Interface
.HLP Help (file name extension)
HLQ High Level Qualifier
HLS Hue, Luminance, Saturation (color model)
HLT Halt
HMA High Memory Area [Microsoft] +
Hub Management Architecture
HMD Head Mounted Display
HMOS High Density Metal Oxide Semiconductor +
High Speed Metal Oxide Semiconductor
HMP Host Monitoring Protocol
HOTT Hot Off The Tree (electronic newsletter)
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
HPR High Performance Routing [IBM]
HPUX Hewlett-Packard Unix
HPW High Performance Workstation [Sun]
.HQX BinHex (file name extension) [Macintosh]
HRIS Human Resource Information System
HRG High Resolution Graphics
HRMS Human Resource Management System
HS High Speed
HSB Hue, Saturation, Brightness (color model)
HSC High Speed Channel
HSI Hue, Saturation, Intensity
HSM Hierarchical Storage Management
HSP High Speed Printer
HSSI High Speed Serial Interface
HST High Speed Technology [U.S. Robotics]
.HST History + Host (file name extensions)
HSV Hue Saturation Value
HTML HyperText Markup Language
HTTP HyperText Transport Protocol
HUT Hopkins Ultraviolet Telescope
H/V Horizontal/Vertical
HVP Horizontal & Vertical Position
H/W Hardware
HWCP Hardware Code Page
HWD Height-Width-Depth
.HYP Hyphenation (file name extension)
HYTELNET Hypertext-browser for Telnet Accessible Sites
Hz Hertz
IAB Internet Architecture Board [Internet]
IAC Inter-Application Communication [Macintosh]
IAG Instruction Address Generation
IAK Internet Access Kit [IBM]
IAL * International Algebraic Language
(ALGOL was first called IAL)
IANA Internet Assigned Numbers Authority [Internet]
IAP Internet Access Provider [Internet]
IAT Import Address Table
IAUP Internet User Account Provider [Internet]
IBC Instrument Bus Computer
iBCS Intel Binary Compatibility Specification
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
ICB Internet Citizen's Band
ICCP Institute for the Certification of Computing Professionals
ICE In-Circuit Emulator [Intel]
ICI Image Component Information
ICL Interface Clear
ICLID Incomming-Call Line Identification
ICM Image Color Matching [Kodak]
ICMP Internet Control Message Protocol [Novell]
.ICO Icon (file name extension)
iCOMP Intel Comparative Microprocessor (index) [Intel]
ICP Integrated Channel Processor
ICR Intelligent Character Recognition
ICS Intuitive Command Structure
ICU ISA Configuration Utility
ID Identification + Identifier
IDA Integrated Digital Access + Intelligent Disk Array +
Intelligent Drive Array
IDAPI Integrated Database Application Programming Interface
IDC Integrated Desktop Connector
IDE Imbedded Drive Electronics +
Integrated Development Environment [Borland] +
Integrated Drive Electronics +
Intelligent Drive Electronics +
Interactive Design and Engineering +
Interface Design Enhancement
IDEA International Data Encryption Algorithm
IDF Intermediate Distribution Frame
IDIV Integer Divide
IDL Interface Definition Language
IDMS Integrated Data Base Management System
IDNX Integrated Digital Network Exchange [IBM]
IDP Integrated Data Processing
IDR Intelligent Document Recognition
IDT Interrupt Descriptor Table
.IDX Index (file name extension)
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
IEF Information Engineering Facility
IEMSI Interactive Electronic Mail Standard
Identification
IETF Internet Engineering Task Force [Internet]
I/F Interface
IFD Image File Directory
IFF Interchangeable File Format [Amiga]
IFG Incoming Fax Gateway
IFP Instruction Fetch Pipeline
IFS Installable File System
IFSM Information Systems Management
IGA Integrated Graphics Array
IGC Integrated Graphics Controller
IGES Initial Graphics Exchange Standard
IGMP Internet Group Multicast Protocol [Internet]
IGRP Interior Gateway Routing Protocol [Cisco]
IGS Internet Go Server [Internet]
IHD Integrated Help Desk [IBM]
IHV Independent Hardware Vendor
IIF Immediate IF
IIOP Internet Inter-Operability Protocol
IIR Immediate Impulse Response
IITF Information Infrastructure Task Force
ILS International Language Support
IMACS Image Management and Communication System
IMAP Internet Message Access Protocol [Internet]
IMAX Maximum Image
IMDS Image Data Stream (format) [IBM]
IME Input Method Editor
IMG Image
IML Initial Microcode Load [IBM]
IMP Information/Interface Message Processor
IMPA Intelligent Multi-Port Adapter [DCA]
IMR Internet Monthly Report [Internet]
IMS Information Management System +
Intermediate Maintenance Standards
IMTC International Multimedia Teleconferencing Consortium
IMTV Interactive Multimedia Television
IMUL Integer Multiply
IN Input
INC Increment
.IND Index (file name extension)
.INF Information (file name extension)
.INI Initialize (file name extension)
INIT Initialization + Initialize
INM Integrated Network Management
INS Input String + Integrated Network Server
INT Integer + Internal + Interrupt +
International (organization Domain name) [Internet]
INTA Interrupt Acknowledge
InterNIC Internet Network Information Center [Internet]
INTO Interrupt if Overflow occurs
I/O Input/Output
IOCC Input/Output Channel Converter +
Input/Output Controller Chip
IOCS Input/Output Control System
IOCTL Input/Output Control
IODE Integrated Development and Debugging Environment [Symantec]
IOPL Input/Output Priviledge Level
IOSGA Input/Output Support Gate Array
IP Instruction Pointer + Internet Protocol
IPC Instructions Per Clock + Interprocess Communication
IPDS IBM Personal Dictation System [IBM] +
Intelligent Printer Data Stream [IBM]
IPFC Information Presentation Facility Compiler [IBM]
IPI Intelligent Peripheral Interface
IPL Initial Program Load/Loader +
Ion Projection Lithography
IPL * Information Programming Language
IPM Interpersonal Message
IPSE Integrated Project Support Environment
IPTC International Press Telecommunications Council
IPX Internetwork Packet Exchange [Novell]
IQL Interactive Query Language
IR Infrared
IRC Internet Relay Chat [Internet]
IRD Integrated Receiver/Descrambler
IRDA Infrared Data Association
IRDS Information Resource Dictionary System
IRET Interrupt Return
IRF Intermediate Routing Function +
Inheritance Rights Filter [Novell]
IRL Interactive Reader Language + Inter-Repeater Link
IRLED Infrared Light Emitting Diode
IRM Information Resource Management + Inherent Rights Mask
IRQ Interrupt Request
IRTF Internet Research Task Force [Internet]
IRX Information Retrieval Experiment
IS Information System + Interrupt Status
ISA Industry Standard Architecture +
Instruction-Set Architecture
ISAM Indexed Sequential-Access Management/Method
ISBN International Standard Book Number
ISC Instruction Set Computer + Inter-Systems Communication [IBM]
ISD Image Section Descriptor +
Instructional Systems Design
ISDN Integrated Services Digital Network
ISH Information Super Highway
ISI Internally Specified Index
ISIS Integrated Systems and Information Services
ISL Interactive System Language
ISMF Interactive Storage Management Facility
ISOC Internet Society
ISO/OSI International Organization for Standardization/Open
Systems Interconnection (model)
ISP Internet Service Provider [Internet] +
Interrupt Stack Pointer + Interrupt Status Port
ISPF Interactive System Programming Facility
ISR Information Storage and Retrieval +
Interrupt Service Routine
ISSN International Standard Serial Number
ISV Independent Software Vendor
IT Information Technology
ITB Information Technology Branch + Intermediate Text Block
ITC International Typeface Corporation
ITN Identification Tasking and Networking
ITR Internet Talk Radio
ITU International Telecommunication Union
ITUG International Telecommunications User Group
ITV Interactive Television
ITX Intermediate Text Block
IU Integer Unit
IUAP Internet User Account Provider [Internet]
IUS/ITB Interchange Unit Separator/Intermediate Transmission
Block
IVIS Interactive Video Information System
IVL Independent Vendor League + Intel Verification Lab
IVR Interactive Voice Response
IVS Interactive Videodisk System
IVT Interrupt Vector Table
IV&V Independent Verification & Validation
I-WAY Information Highway
IXC Interchange Carrier
JA Jump Address + Jump if Above JAD Joint Application Design JAE Jump if Above or Equal JANET Joint Academic Network JBE Jump if Below or Equal JC Jump if Carry set JCL Job Control Language JE Jump if Equal JEDEC Joint Electronic Devices Engineering Council JEIDA Japanese Electronics Industry Development Association JES Job Entry System JFET Junction Field Effect Transistor JFIF JPEG File Interchange Format JFS Journaled File System [IBM] JG Jump if Greater JGE Jump if Greater or Equal JIPS JANET Internet Protocol Service JL Jump if Less JLE Jump if Less than or Equal to JMP Jump JNA Jump if Not Above JNAE Jump if Not Above or Equal JNB Jump if Not Below JNBE Jump if Not Below or Equal JNG Jump if Not Greater JNGE Jump if Not Greater or Equal .JNK Junk (file name extension) JNLE Jump if Not Less or Equal JNO Jump if No Overflow JNP Jump if No Parity JNS Jump if No Sign JPE Jump if Parity Even JPEG Joint Photographic Experts Group JPL Jet Propulsion Laboratory JPO Jump if Parity Odd JS Jump if Sign JZ Jump if Zero JNZ Jump if Not Zero JUGHEAD Jonzy's Universal Gopher Hierarchy Excavation and Display [Internet]
K-12 Kindergarten through 12th Grade [US Education System] KAM Keep Alive Memory Kb Kilobit KB Keyboard + Kilobyte (1,024 bytes) KBD Keyboard (also KEYB) KBD$ Keyboard [OS/2] KBPS Kilobytes Per Second KDT Key Definition Table KEFIR Key Findings Reporter [GTE] KEYBBE Foreign language KEYBoard program - Belgium KEYBBR Foreign language KEYBoard program - Brazil KEYBCF Foreign language KEYBoard program - Canadian-French KEYBCZ Foreign language KEYBoard program - Czechoslovakia (Czech) KEYBDF Foreign language KEYBoard program - Denmark KEYBFR Foreign language KEYBoard program - France KEYBGR Foreign language KEYBoard program - Germany KEYBHU Foreign language KEYBoard program - Hungary KEYBIT Foreign language KEYBoard program - Italy KEYBLA Foreign language KEYBoard program - Latin America KEYBNL Foreign language KEYBoard program - Netherlands KEYBNO Foreign language KEYBoard program - Norway KEYBPL Foreign language KEYBoard program - Poland KEYBPO Foreign language KEYBoard program - Portugal KEYBSF Foreign language KEYBoard program - Swiss-French KEYBSG Foreign language KEYBoard program - Swiss-German KEYBSL Foreign language KEYBoard program - Czechoslovakia (Slovak) KEYBSP Foreign language KEYBoard program - Spain KEYBSU Foreign language KEYBoard program - Finland KEYBSV Foreign language KEYBoard program - Sweden KEYBUK Foreign language KEYBoard program - United Kingdom KEYBUS Foreign language KEYBoard program - United States KEYBYU Foreign language KEYBoard program - Yugoslavia kHz Kilohertz KIS Knowbot Information Service [Internet] KPI Kernal Programming Interface KQML Knowledge Query and Manipulation Language KSH Korn Shell (program) [Unix] KSPH Keystrokes Per Hour KSR Keyboard Send Receive KRS Knowledge Retrieval System
LADDR Layered Device Driver Architecture [Microsoft] LALL Longest Allowed Lobe Length LAN Local Area Network LANACS Local Area Network Asynchronous Connection Server LAPB Link Access Procedure Balanced (protocol) LAPD Link Access Procedure Direct (protocol) LAPM Link Access Procedure for Modems LAR Load Access Rights LASER Light Amplification by Stimulated Emission of Radiation LASTport Local Area Storage Transport (protocol) [DEC] LAT Local Access Terminal + Local Area Transport [DEC] LAVC Local Area VAX Cluster LAWN Local Area Wireless Network LB Left Button (of 2 or 3 button Mouse) LBA Logical Block Addressing LBL Label LBR Librarian .LBR Library (file name extension) LBT Listen Before Talk LBX Local Bus Accelerator LCA Lotus Communications Architecture [Lotus] LCC Leadless Chip Carrier LCD Liquid Crystal Display LCF Low Cost Fiber LCK Library Construction Kit [Mircrosoft FoxPro] LCP Link Control Protocol (protocol) LCU Last Cluster Used LDA Logical Device Address LDC Lotus Development Corporation LDM Long Distance Modem LDT Local Descriptor Table LE Less or Equal LEA Load Effective Address LEAF Law Enforcement Access Field LEC Local Exchange Carrier LED Light Emitting Diode LEL Link, Embed and Launch-to-edit [Lotus] LEM Language Extension Module LEN Low Entry Networking .LET Letter (file name extension) LEX Lexicon LF Line Feed LFI Last File Indicator LFN Long File Name LFT Low Function Terminal [IBM] LFU Least Frequently Used LGDT Load Global Descriptor Table LIAS Library Information Access System .LIB Library (file name extension) LIC Line Interface Coupler [IBM] LICS Lotus International Character Set [LDC] LIDT Load Interrupt Descriptor Table LIEP Large Internet Exchange Packet [Novell] LIF Low Insertion Force LIFO Last In, First Out LILO Last In, Last Out LIM Lotus/Intel/Microsoft LIMA Lotus/Intel/Microsoft/AST LIMS Library Information Management System LINUX (Operating system named after Linus Torvalds) LIP Large Internet Packet LIPS Logical Inferences Per Second LISP List Processing (Language)(See HLL) LISTSERV List Server [Internet] LLC Logical Link Control LLDT Load Local Descriptor Table LLF Low Level Format LMB Left Mouse Button LMBCS Lotus Multibyte Character Set [Lotus] LMI Local Management Interface LMS Lotus Messaging Switch [Lotus] LMSW Load Machine Status Word LMU LAN Management Utilities [IBM] LM/X LAN Manager for Unix LN Logarithm (Natural) LN:DI Lotus Notes:Document Imaging LNK Link LOC Loop On-Line Control LOCIS Library of Congress Information System LODSB Load String Byte LOG Logarithm (Base 10) LOGO (Programming Language)(See HLL) LOOPE Loop while Equal LOOPNE Loop while Not Equal LOOPNZ Loop while Not Zero LOOPZ Loop while Zero LORE Line Oriented Editor LPC Local Procedure Call LPD Line Printer Daemon (protocol) [Berkley] LPI Lines Per Inch LPL Lotus Programming Language [Lotus 1-2-3] [LDC] LPM Lines Per Minute LPN Logical Page Number LPS Low-Power Schottky LPT Line Printer LPT1 First Parallel Printer Port LPT2 Second Parallel Printer Port LPT3 Third Parallel Printer Port LQ Letter Quality LQM Link Quality Monitoring (protocol) LR Link Register LRC Local Register Cache + Longitudinal Redundancy Check LRL Least Recently Loaded LRM Language Reference Manual + Least Recently-Used Master .LRS Language Resource (file name extension) [WordPerfect] LRU Least Recently Used LSA LAN and SCSI Adapter [IBM] + Line Sharing Adapter LSAPI License Services Application Program Interface LSB Least Significant Bit LSC Least Significant Character LSD Least Significant Digit LSI Large Scale Integration LSL Link Support Layer + Load Segment Limit LST List .LST List (file name extension) LTR Left-To-Right + Letter + Load Task Register LU Logical Unit (Also LUN) LUA Logical Unit Application (interface) LUI Local User Input LUIS Library User Information Service LUT Lookup Table LV Logical Volume [IBM] LVM Logical Volume Management [IBM] LZ Lazy Write LZW Lempel-Ziv-Walsh (algorithm)
mA Milliampere Mac Macintosh (Apple Macintosh Computer) MAC Media/Medium Access Control .MAC MacPaint (file name extension) + Macro (file name extension) MACH Multilayer Actuator Head [Epson] MADE Manufacturing and Automated Design Engineering mAh Milliampere-Hour .MAI Mail (file name extension) MAN Manual [Unix] + Metropolitan Area Network MANPAGE Manual Page [Unix] MAP Maintenance Analysis Procedures + Manufacturing Automation Protocol + Memory Allocation Map .MAP Linker Map (file name extension) MAPI Mail/Messaging Applications Programming Interface [Microsoft] MAPICS Manufacturing, Accounting and Production Information Control System [IBM] MARVEL Machine-Assisted Realization of the Virtual Electronic Library [Library of Congress] MASM Macro Assembler [Microsoft] MASS Maximum Availability and Support Subsystem [Parallan] MAU Media Access Unit + Multistation Access Unit MAVDM Multiple Application VDM MAX Maximum MB Megabyte (1,000 kilobytes) + Middle Button (of 3 button Mouse) MBASIC Microsoft BASIC [Microsoft] MBCS Multi-Byte Character Set [IBM] MBONE Multicast Backbone [Internet] MBPS Megabytes Per Second MBR Master Boot Record MBX Mailbox MCA Micro Channel Adapter/Architecture [IBM] MCAD Mechanical Computer Aided Design MCB Memory Control Block MCGA Multicolor Graphics Array MCI MCI Communications Corp. (name from initials of original company - Microwave Communications, Inc.) + Media Control Interface [Microsoft] MCL Microsoft Compatibility Labs [Microsoft] MCM Multi-Chip Module MC-PGA Metallized Ceramic - Pin Grid Array MC-QFP Metallized Ceramic - Quad Flat Pack MCU Multi-Chip Unit [DEC] MD Make Directory + Monochrome Display MDA Monochrome Display Adapter .MDF Menu Definition File (file name extension) MDI Multiple Document Interface MDIC Manchester Decoder and Interface Chip [AT&T] MDK Multimedia Developers Kit [Microsoft] MDLP Modile Data Link Protocol MDR Minimum Design Requirement MDY Month Day Year .ME Opening Information (file name extension) (As in READ.ME) MEB Memory Expansion Board MEG Megabyte MEM Memory .MEN Menu (file name extension) MESI Modified, Exclusive, Shared and Invalid (protocol) MET Memory Enhancement Technology [Hewlitt-Packard] .MET Metafile (file name extension) MFC Microsoft Foundataion Class [Microsoft] MFFS Microsoft Flash File System [Microsoft] MFLOPS Million Floating Point Operations Per Second MFM Modified Frequency Modulation MFP Multifunction Peripheral MFPI Multifunction Peripheral Interface MFS Macintosh File System [Macintosh] + Magnetic Tape Field Search + Modified Filing System [Revelation Technologies] MFT Master File Table + Multiprogramming with a Fixed number of Tasks MGA Monochrome Graphics Adapter MGE Modular GIS Environment MGR Manager MHS Message Handling Service + Message Handling System MHz Megahertz MIB Management Information Base MICRO One-millionth MICS Macro Interpretive Commands MIDI Musical Instrument Digital Interface MIF Management Information Format .MIF Management Information Files (file name extension) MII Microsoft/IBM/Intel MIL Machine Interface Layer [Go Corporation] + Military (organization Domain name) [Internet] MIM Metal-Insulator-Metal (screen) MIMD Multiple Instruction Multiple Data Stream (processor) MIME Multipurpose Internet Mail Extension [Internet] MIN Minimum + Mobile Identification Number MINUET Minnesota Internet Users Essential Tool [Internet] MIPS Million Instructions Per Second MIS Management Information System + Multimedia Information Sources [Internet] MISC Miscellaneous MIX Member Information Exchange MKDIR Make Directory ML Machine Language + Meta Language MLAPI Multilingual Application Programming Interface MLC Multilayer Ceramic + Multilevel Cell (program) [Internet] MLID Multi-Link Interface Driver MLM Mailing List Manager [Internet] MM Minutes + Month MMA Microcomputer Managers Association MMC Matched Memory Cycle + Microcomputer Marketing Council MMCD MultiMedia Compact Disk MMI Man-Machine Interface MMIS Materials Manager Information System MMPM Multi Media Presentation Manager MMU Memory Management Unit MNOS Metal Nitride Oxide Semiconductor MNP Microcom Networking Protocol [Microcom] .MNU Menu (fine name extension) MO Magneto-Optical (disk drive) MOB Memory-Order Buffer MOBO Mother Board MOD Module + Modulus MODEM Modulator Demodulator MOHLL Machine Oriented High Level Language MOM Microsoft Office Manager [Microsoft] MOO MUD, Object Oriented [Internet] MOP Maintenance Operations Protocol MOS Metal Oxide Semiconductor MOSFET Metal Oxide Semiconductor Field Effect Transistor MOV Metal Ocide Varistor + Move MOVS Move String MP Massively Parallel (processing) + Multiple Processors MPC Multimedia Personal Computer + Multipath Channel MPCS Mission Planning and Control Station (Software) MPE Multiple Programming Executive [HP] MPEG Moving Picture Experts Group MPI Message Passing Interface + Multiprecision Integer MPM Message Passing Library [IBM] MPP Massively Parallel Processing + Message Processing Program MPQP Multi-Protocol Quad Port [IBM] MPR Multipart Repeater + Multi Protocol Router [Novell] MPS Multiprocessor Specification MPTN Multi-Protocol Transport Network MPTS Multi-Protocol Transport Services MPU Microprocessor Unit MQI Message Queue Interface MR Magnetoresistive + Modem Ready MRCF Microsoft Realtime Compression Format MRCI Microsoft Realtime Compression Interface MRI Magnetic Resonance Imaging MRM Most Recently-Used Master MRO Multi-Region Operation MRP Materials Requirement Planning MRPL Main Ring Path Length MRS Media Recognition System MRT Mean Repair Time MS Memory System + Message Store + Microsecond + Microsoft Corporation + Millisecond MSACM Microsoft Audio Compression Manager [Microsoft] MSAU Multi-Station Access Unit MSAV Microsoft Anti Virus [Microsoft] MSB Most Significant Bit MSBF Mean Swaps Between Failures MSCDEX Microsoft Compact Disc Extensions [Microsoft] MSD Mass Storage Device + Most Significant Digit + Microsoft System Diagnostics [Microsoft] MS-DOS Microsoft - Disk Operating System [Microsoft] MSDR Multiplexed Streaming Data Request MSDS Microsoft Developer Support [Microsoft] MSFR Minimum Security Function Requirements [IBM] MSG Message .MSG Program Message (file name extension) MSI Medium Scale Integration MSL Map Specification Library + Mirrored Server Link MSN Microsoft Network [Microsoft] MSO Multiple-Systems Operator .MSP Microsoft Paint (file name extension) [Microsoft] MSS Mass Storage System MSW Machine Status Word MTA Message Transfer Agent + Multiple Terminal Access MTBB Mean Time Between Breakdowns MTBF Mean Time Between Failures MTBJ Mean Time Between Jams MTF Microsoft Tape Format [Microsoft] + Modulation Transfer Function MTS Message Transfer Service/System + Multichannel Television Sound MTTD Mean Time To Diagnose MTTF Mean Time To Failure MTTR Mean Time To Repair MTU Maximum Transmission Unit MUD Multi-User Dialogue/Domain/Dungeon [Internet] MUL Multiply MUMPS Massachusetts General Hospital Utility Multi-Programming System (Programming Language) MUSE Multi-User Shared Environment MUT Monitor Under Test MUX Multiplexer mV Millivolt MVB Multimedia Viewer Book MVC Multimedia Viewer Compiler MVDM Multiple Virtual DOS Machines MVGA Monochrome Video Graphics Array MVP Multimedia Video Processor MVS Multiple Virtual Storage MVT Multiprogramming with a Variable number of Tasks MX Mail Exchanger [Internet] MZR Multiple Zone Recording
NAC Network Adapter Card
NACD National Association of Computer Dealers
NACS National Advisory Committee on Semiconductors
NAE Not Above or Equal
NAK Negative Acknowledgment
NAM Number Assignment Module
NAMPS Narrow-Band Analog Mobile Phone Service [Motorola]
NANO One thousand-millionth
NAP Network Access Point
NAPLPS North American Presentation Level Protocol
Syntax (graphics)
NAS Network Application Support [DEC]
NASA National Aeronautics and Space Administration
NASDAQ National Association of Securities Dealers
Automatic Quotation
NASI NetWare Asynchronous Services Interface [Novell]
NASKER NASA Ames Kernel (benchmark)
NAU Network Addressable Unit
NBE Not Below or Equal
NBI Nothing But Initials
NBS National Bureau of Standards + Numeric Backspace
NC No Carry + Numerical Control
NCA Network Communications Adapter
NCC Network Control Center
.NCF Netware Command File [Novell]
NCGA National Computer Graphics Association
NCIC National Crime Information Center
NCMT * Numerical Control for Machine Tools
NCP NetWare Core Protocol + Not Copy Protected +
Network Control Processor/Program/Protocol
NCR National Cash Register (Company)
NCSA National Center for Supercomputing Applications
NCSC National Computer Security Center
NCSI Network Communications Services
Interface [Network Products Corp.]
NDB Non-Directional Beacon
NDDK Network Device Development Kid [Microsoft]
NDEF Not to be Defined
NDIS Network Device/Driver Interface Specification
NDP Numeric Data Processor
NDR Network Data Representation
NDRO Non-Destructive Read Out
NDS NetWare Directory Service [Novell]
.NDX Index (file name extension)
NEC Nippon Electric Company
NED NASA Extragalactic Database [NASA]
NEG Negative + Negate
NEP Network Entry Point
NES National Education Supercomputer
NEST Novell Embedded Systems Technology [Novell]
NET Network (organization Domain name) [Internet]
NetBIOS Network Basic Input/Output System [IBM]
NetBEUI NetBIOS Extended User Interface [IBM]
.NEW New Information (file name extension)
NEWS NetWare Early Warning System [Frye Computer]
NEWS. Current events [USENET Newsgroup Category]
NEXT Near-End Crosstalk
NFF No Fault Found
NFS Network File Server/System
NG No Good
NGE Not Greater or Equal
NHC National Hurricane Center
NHR National Handwriting Recognition
N/I Non-Interlaced
NIA Next Instruction Address
NIC Network Information Center [Internet] +
Network Interface Card +
Numeric Intensive Computing
NICAD Nickel-Cadmium
NICOLAS Network Information Center OnLine Aid System [NASA]
NID New Interactive Display [NEC] + Next ID
NII National Information Infrastructure
NIM Network Installation Management [IBM]
NIMH Nickel-Metal Hydride
NIO Native Input/Output
NIPS Network I/Os Per Second
NIR Network Information Retrieval
NIS Network Information Service [Unix]
N-ISDN National ISDN
NISO National Information Standards Organization
NISP Networked Information Services Project
NIST National Institute for Standards and Technology
NITC National Information Technology Center
NIU Network Interface Unit
NJE Network Job Entry (protocol) [IBM]
NL New Line
NLE Not Less or Equal
NLM NetWare Loadable Module [Netware]
NLP Natural-Language Processing
NLQ Near Letter Quality
NLSFUNC National Language Support Function
NLV National Language Version [IBM]
NMI Non-Maskable Interrupt
NMM NetWare Management Map [NetWare]
NMOS Negative Channel Metal-Oxide Semiconductor
NMP Network Management Protocol [AT&T]
NMS Network Management System [Novell]
NN Network Node + No News [Internet]
NNI Network-Network Interface
NNTP Network News Transfer Protocol [Internet]
NOC Network Operations Center
NOP No Operation
NOPAC Network OPAC
NOR Not Or
NOS Network Operating System
NPA Network Printer Alliance
NPI Network Printer Interface
NPL Nonprocedural Language
NPS Novell Productivity Specialist [Novell]
NPTN National Public Telecomputing Network
NPU Natural Processing Unit
NPX Numeric Processor Extension
NQS Network Queing System [Cray]
NRC National Research Council (Canada)
NREN National Research and Education Network
NRZ Not Return to Zero
NRZI Non Return to Zero Inverted
NS Nanosecond + Network Supervisor + Non Stop
NSA POLY National Security Agency Polygraph
NSERC National Sciences and Engineering Research Council (Canada)
NSF National Science Foundation
NSFNET National Science Foundation Network
NSI NASA Science Internet
NSLOOKUP Name Server Lookup [Unix]
NSP Native Signal Processing [Intel] + Network Service Provider
NSSC NASA Standard Spacecraft Computer
NSTC National Science and Technology Council
NSTL National Software Testing Labs
NT New Technology [Microsoft]
NTAS NT Advamced Server [Microsoft]
NTF No Trouble Found
NTFS New Technology File System [Microsoft]
NTIA National Telecommunications and
Information Administration
NTIS National Technical Information Service
NTRAS NT Remote Access Services [Microsoft]
NTSA NetWare Telephony Services Architecture [Novell]
NTSC National Television Standards Committee
NUI Network User Identification +
Network User Interface +
Notebook User Interface [Go Corporation]
NUL Null + (dummy device) + (no device)
NV No Overflow
NVM Non-Volatile Memory
NVOD Near-Video On Demand
NVP Nominal Velocity of Propagation
NVRAM Non-Volatile Random Access Memory
NVT Network Virtual Terminal +
Novell Virtual Terminal [Novell]
OAB One-to-All Broadcast
OAD Open Architecture Driver [Bernoulli]
OAG Official Airline Guide + Online Air Guide
OAI Open Applications Interface
OAS One-to-All Scatter
OBD On Board Diagnostics
OBEX Object Exchange [Borland]
OBJ Object
OC Optical Carrier
OCE Open Collaborative Environment [Apple]
OCF Objects Components Framework [Borland]
OCL Operation Control Language + Operator Control Language
OCR Optical Character Recognition
OCS On-Card Sequencer
ODA Office Document Architecture
ODAPI Open Database Application Programming
Interface [Borland]
ODBC Open Data Base Connectivity [Microsoft]
ODBMS Object-Oriented Database Management System (also
see OODMS)
ODI Open Datalink Interface [Novell] +
Open Device Interconnect [NetWare]
ODM Object Data Manager [IBM]
ODMA Open Document Management API
ODP Open Distributed Processing
ODS Open Data Services [Microsoft]
ODT Open Desktop
OEM Original Equipment Manufacturer
OEP Operand Execution Pipeline
OF Overflow Flag
OFB Output Feedback (mode)
OFMT Output Format for Numbers
OFS Object File System [Microsoft] + Output Field Separator
OH Off Hook
OIDL Object Interface Definition Language
OIS Office Information Systems
OLAP On-Line Analytical Processing
.OLD Old version (file name extension)
OLE Object Linking and Embedding [Microsoft]
OLI Optical Line Interface [AT&T]
OLMC Output Logic Macrocell
OLTP On-Line Transaction Processing
OM Object Manager
OMA Object Management Architecture [Microsoft]
OME Open Messaging Environment (protocol)
OMF Object Module Format [Microsoft] +
Open Media Framework + Open Message Format
OMG Object Management Group
OMI Open Messaging Interface [Lotus]
OMNS Open Network Management System
OMR Optical Mark Recognition
ONC Open Network Computing [Sun]
ONDS Open Network Distribution Services [IBM]
OODB Object-Oriented Database
OODMS Object-Oriented Database Management System (also
see ODBMS)
OOL Object-Oriented Language
OOOS Object-Oriented Operating System
OOPL Object-Oriented Programming Language
OOPS Object Oriented Programming and Systems
OOS Object-Oriented Systems +
Off-line Operating Simulator
OOT Object-Oriented Technology
OOUI Object Oriented User Interface
OP Operation + Optical + Output
OPAC Online Public Access Catalog [Internet]
OPC Optical Photoconductor
OPCODE Operational Code
OPD Operand
OPI Open Prepress Interface
OPM Operations Per Minute
OPS Operations
OPT Open Protocol Technology
.OPT Options (file name extension)
OPUS Octal Program Updating System
ORACLE On-Line Inquiry and Report Generator (UNIX DB program)
ORB Object Request Broker [Microsoft]
ORG Organization (organization Domain name) [Internet]
ORI Online Retrieval Interface
.ORI Original (file name extension)
ORS Output Record Separator
OS Operating System
OS/2 Operating System/2 [IBM]
OSA Open System Architecture
OS/E Operating System/Environment
OSF Open Software Foundation
OSI Open Systems Interconnection
OSM Off-Screen Model
OSP Optical Storage Processor
OSPF Open Shortest Path First
OSQL Object Structured Query Language
OT Object Technology
OTDR Optical Time Domain Reflectometer
OTF Open Token Foundation
OTP One-Time Programmable
OURS Open Users Recommended Solutions
.OUT Outlines (file name extension)
OUTS Output String
OV Overflow
.OVL Program Overlay (file name extension)
.OVR Program Overlay (file name extension)
OWL Object Windows Library [Borland] +
Open Windows Library [Borland]
PABX Private Automatic Branch Exchange
PACS Picture Archiving and Communication System
PACS-L Public Access Computer Systems List [Internet]
PAD Packet Assembler/Disassembler
PADS Pen Application Development System [Slate Corporation]
PAIH Public-Access Internet Host [Internet]
PAIS Public-Access Internet Site [Internet]
.PAK Packed (compressed file name extension) [NoGate
Consulting]
PAL Paradox Applications Language [Borland] +
Phase Alternating Line + Programmed Array Logic +
Programming Assembly Language
.PAL Palette (file name extension)
PALC Plasma-Addressed Liquid Crystal (display)
PALS Principles of the Alphabet Literacy System
PAM Pulse Amplitude Modulation
PAP Packet-level Procedure +
Passwork Authentication Protocol +
Printer Access Protocol
PAR Personal Animation Recorder + Parallel
PARA Paragraph
PARC Palo Alto Research Center [XEROX]
.PAS PASCAL source code (file name extension)
PASCAL (Programming Language named for Blaise Pascal)
.PAT Patch + Pattern (file name extensions)
PAX Portable Archive Exchange [Unix]
PBE Prompt By Example
PBGA Plastic Ball Grid Array
PBX Private Branch Exchange
PC Personal Computer + Printed Circuit + Program Counter
PCACIAS Personal Computer Automated Calibration Interval
Analysis System
PCB Printed Circuit Board + Program Control Block
PCBC Plain Cipher Block Chaining
PCD Photo Compact Disk
PC-DOS Personal Computer - Disk Operating System [IBM]
PCEB PCI to EISA Bridge [Intel]
PCI Peripheral Component Interconnect/Interface
PC-I/O Program Controlled I/O
PCL Printer Command Language [HP] + Process Control Language
PCM Personal Computer Manufacturer + Pulse Code Modulation
PCMC PCI, Cache, Memory Controller [Intel]
PCMCIA Personal Computer Memory Card International Association
PCMIM Personal Computer Media Interface Module
PCN Personal Computer Network
PCNFS Personal Computer Network File System
PCO Point of Control and Observation
PCS Patchable Control Store +
Personal Communication Services/System +
Personal Conferencing Specification +
Planning Control Sheet + Print Contrast Signal +
Process Control Systems + Program Counter Store +
Programmable Drive Table + Project Control System
.PCT Picture (file name extension)
.PCX Picture Image (file name extension)
PD Public Domain
PDA Personal Digital Assistant
PDD Physical Device Driver
PDF Package Definition File + Portable Document Format +
Portable Document File + Processor Defined Function +
Program Development Facility
.PDF Printer Description (file name extension)[Borland,Lotus]
PDIAL Public Dialup Internet Access List [Internet]
PDL Page Description Language + Program Description Language
+ Program Design Language
PDM Product Data Management
PDN Public Data Network
PDP Plasma Display Panel + Programmable Data Processor +
(DEC Computer System Designation, i.e. PDP-8, PDP-11)
PDS Packet Driver Specification + Partitioned Data Set +
Planetary Data System + Portable Document Software +
Processor Direct Slot [Macintosh]
PDSS Post Development and Software Support
PDT Performance Diagnostic Tool [IBM] +
Programmable Drive Table
PDU Plug Distribution Unit
.PDX Paradox files (file name extension) [Borland]
PE Parity Even + Processing Element + Protect Enable