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Computer Acronyms

Andrew Albrighton

The world of computers is full of acronyms, and even the most knowledgeable computer expert couldn't possibly know them all. Below is a list of acronyms that should come in useful.

Note: The colloquial acronyms used in Internet shorthand are listed here.


Acronyms

A I B I C I D I E I F I G I H I I I J I K I L I M I N

O I P I Q I R I S I T I U I V I W I X I Y I Z

Acronym Meaning
3GL Third Generation Language
ABR Available Bit Rate Service
ACR Actual Cell Rate
ACTS Advanced Communication Technology Satellite
ADC Analogue to Digital Converter
ADCCP Advanced Communication Control Procedure
ADSL Asymmetric Digital Subscriber Line
AGP Advanced Graphics Port
AMPS Advanced Mobile Phone System
ANSI American National Standards Institute
AOL America On-Line
ARP Address Resolution Protocol
ARQ Automatic Repeat Request
ASCII American Standard Code for Information Interchange
ATAPI Advanced Technology Attachment Programmed Interface
ATM Asynchronus Transfer Mode
AVI Audio/Video Interleaved
 

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BBS Bulletin Board Service
BGP Border Gateway Protocol
B-ISDN Broadband ISDN
BOC Bell Operating Company
BUS Broadcast / Unknown Server
 

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CBR Constant Bit Rate Services
CD Compact Disc
CDF Channel Definition Format
CDMA Code Division Multiple Access
CDPD Cellular Digital Packet Data
CDV Cell Delay Variation
CER Call Error Rate
CGI Common Gateway Interface
CHAP Challenge Authentication Protocol
CIDR Classless Interdomain Routing
CLR Cell Loss Ratio
CLUT Colour Lookup Table
CMR Cell Mis-insertion Rate
CPU Central Processing Unit
CSMA Carrier Sense Multiple Access
CSS Cascading Style Sheet
CTD Cell Transfer Delay
CVDT Cell Variation Delay Tolerance

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DAC Digital to Analogue Converter
DCE Data Circuit Terminating Equipment
DDE Dynamic Data Exchange
DHCP Dynamic Host Control Protocol
DHTML Dynamic Hypertext Mark-up Language
DIMM Dual In-Line Memory Module
DMSP Distributed Mail System Protocol
DNS Domain Name Server
DNS Domain Name System
DQDB Distributed Queue Dual Bus
DRAM Dynamic Random Access Memory
DSMA Digital Sense Multiple Access
DSS Digital Signature Standard
DSSSL Document Style Semantics and Specification Language
DTD Document Type Definition
DTE Data Terminating Equipment
DVD Digital Versatile Disc
DVMRP Distance Vector Multicast Routing Protocol
 

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EAPROM Electronically Alterable Programmable Read Only Memory
ECP Enhanced Communication Port
EDO Extended Data Out
EEPROM Electronically Erasable Programmable Read Only Memory
EGA Enhanced Graphics Adaptor
EGA Enhanced Graphics Adaptor
EGP Exterior Gateway Protocol
EIDE Enhanced Integrated Drive Electronics
EISA Extended Industry Standard Architecture
EMS Error Management System
EPA Environmental Protection Agency
ER Explicit Rate
EUVL Extreme  Ultraviolet Lithography
 

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FAQ Frequently Asked Questions
FCC Federal Communications Commission
FDDI Fibre Distributed Data Interface
FDM Frequency Division Multiplexing
FIFO First In First Out
FILO First In Last Out
FORTAN Formula Translation
FTP File Transfer Protocol
FTP File Transfer Protocol
FTTC Fibre To The Curb
FTTH Fibre To The Home

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GB Gigabyte
GCRA Generic Cell Rate Algorithm
GIF Graphic Interchange Format
GPF Generalised Patch Format
GPU Graphics Processing Unit
GSM Global System for Mobile Communications
GUI Graphical User Interface
 

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HDD High Density Disk
HDLC High-Level Data Link Control
HDTV High Definition Television
HEC Header Error Control
HFC Hybrid Fibre Coax
HIPPI High-Performance Parallel Interface
HTML HyperText Mark-up Language
HTTP HyperText Transfer Protocols
 

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IAB Internet Architecture Board
ICMP Internet Control Message Protocol
IDE Integrated Drive Electronics
IDEA International Data Encryption Algorithm
IDU Interface Data Unit
IETF Internet Engineering Task Force
IGMP Internet Group Management Protocol
IMAP Interactive Mail Access Protocol
IMP Interface Data Unit
IMTS Improved Mobile Telephone Service
IP Internet Protocol
IPRA Internet Policy Registration Authority
IPX Inernetwork Packet Exchange
ISA Industry Standard Architecture
ISDN Integrated Services Digital Network
ISM Industrial/Scientific/Medical
ISO International Standards Organisation
ISP Internet Service Provider
ITU International Telecommunication Union
IXC Interexchange Carrier
 

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JPEG Joint Photographic Equipment Group
JS JavaScript
 

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KB Kilobyte
KDC Key Distribution Centre

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LAN Local Area Network
LAP Link Access Procedure
LASER Light Amplification By Stimulated Emission of Radiation
LATA Local Access and Transport Layer
LCP Link Control Protocol
LDAP Lightweight Development Action Plan
LDCM LANDesk Client Manager
LEC Local Exchange Carrier
LES LAN Emulation Server
LIFO Last In First Out
LILO Last In Last Out
LIS Logical IP Subnet
LLC Logical Link Control
LPT Line Print Terminal
LRU Least Recently Used
 

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MAC Medium Access Control
MACA Multiple Access with Collision Avoidance
MAN Metropolitan Area Network
MB Megabyte
Mbone Multicast Backbone
MCR Minimum Cell Rate
MHz MegaHertz
MIB Management Information Base
MIDI Musical Instruments Digital Interface
MIME Multipurpose Internet Mail Extensions
MMX Multimedia Extensions
MODEM Modulator Demodulator
MOSPF Multicast OSPF
MPEG Motion Pictures Experts Group
MS Microsoft
MSC Mobile Switching Centre
MTSO Mobile Telephone Switching Office
MTU Maximum Transfer Unit
 

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NAK Negative Acknowledgement
NAP Network Access Point
NCP Network Control Protocol
NCP Network Core Protocol
NIC Network Information Centre
N-ISDN Narrowband ISDN
NIST National Institute of Standards and Technology
NNTP Network News Transfer Protocol
NSA National Security Agency
NSAP Network Service Access Point
NVRAM Non-Volatile Random Access Memory

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OAM Operation and Maintenance
OC Optical Carrier
OLE Object Linking and Embedding
ONU Optical Network Unit
OOP Object Orientated Programming
OSPF Open Shortest Path First
 

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PAD Packet Assembler Dissembler
PAL Phase Alternating Line
PBX Private Branch Exchange
PCA Policy Certification Authority
PCI Peripheral Component Interface
PCM Pulse Code Modulation
PCMCIA Personal Computer Memory Card International Association
PCN Personal Communications Network
PCR Peak Cell Rate
PCS Personal Communications Services
PDU Protocol Data Unit
PEM Privacy Enhanced Mail
PES Packetised Elementary Stream
PGP Pretty Good Privacy
PIM Protocol Independent Multicast
PNP Plug and Play
POP Point of Presence
POP3 Post Office Protocol-3
POTS Plain Old Telephone Service
PPP Point to Point Protocol
PROM Programmable Read Only Memory
PSTN Public Switched Telephone Network
PTT Post, Telegraph and Telephone
PVC Permanent Virtual Circuit
 

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QAM Quadrature Amplitude Modulation
QOS Quality of Service

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RAID Redundant Array of Inexpensive Disks
RAM Random Access Memory
RARP Reverse Address Resolution Protocol
RFC Request For Comment
RIMM RAMBUS In-line Memory Module
RM Resource Management
ROM Read Only Memory
RPG Report Program Generator
RSVP Resource Reservation Protocol
 

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SABME Set Asynchronus Balanced Mode Extended
SAP Service Access Point
SCR Sustained Cell Rate
SCSI Small Computer Interface
SDH Synchronous Digital Hierarchy
SDLC Synchronous Data Link Control
SDRAM Synchronous Dynamic Random Access Memory
SDU Service Data Unit
SEAL Simple Efficient Adaptation Layer
SECAM Sequential Couleur Avec Memoire
SECBR Severely Errored Cell Block Ratio
SGML Standard Generalised Mark-up Language
SHA Secure Hash Algorithm
SHTML Static Hypertext Mark-up Language
SIMM Single In-Line Memory Module
SIPP Simple Internet Protocol Plus
SLIP Serial Line Internet Protocol
SMDS Switched Mulitmegabit Data Service
SMI Structure of Management Information
SMS Short Message Service
SNA Simple Network Architecture
SNMP Simple Network Management Protocol
SNRME Set Normal Response Mode Extended
SONET Synchronous Optical Network
SPE Synchronous Payload Envelope
SPX Sequenced Packet Exchange
SQL Structured Query Language
SSCOP Service Specific Connection Orientated Protocol
STS Synchronous Transport Signal
SVGA Super Video Graphics Adaptor

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TCP Transmission Control Protocol
TDC Tabular Data Control
TDM Time Division Multiplexing
TIP Terminal Interface Processor
TPDU Transport Protocol Data Unit
TSAP Transport Service Access Point
 

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UBR Un-Specified Bit Rate Service
UDP User Datagram Protocol
URI Uniform Resource Identifier
URL Uniform Resource Locator
USB Universal Serial Bus
UTP Unshielded Twisted Pair
 

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VB Visual Basic
VBR Variable Bit Rate
VGA Video Graphics Adaptors
VHF Very High Frequency
VLF Very Low Frequency
VSAT Very Small Aperture Technology
 

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WAN Wide Area Network
WAP Wireless Application Protocol
WDM Wavelength Division Multiplexing
WDMA Wavelength Division Multiple Access
WWW World Wide Web
WYSIWYG What You See Is What You Get
 

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XGA Extended Graphics Adaptor
XML Extensible Mark-up Language
XP Extreme Programming
XQL XML Query Language
XSL Extensible Stylesheet Language
 

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Y2K Year 2000
YBK Year Book
   

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