200 Important Computer Abbreviations full forms for Competitive Exams

important computer abbreviations with full forms are important in IBPS, SSC, UPSC and competitive examinatin

1GL : First-Generation Programming Language
2GL : Second-Generation Programming Language
3GL : Third-Generation Programming Language
4GL : Fourth-Generation Programming Language
5GL : Fifth Generation Programming Language

A
AC : Alternating Current 
ACL : Access Control List 
ALGOL : Algorithmic Language 
ALU : Arithmetic and Logical Unit 
ANSI : American National Standards 
ARPA : Advanced Research Projects Agency
ATM : Asynchronous Transfer Mode 

B
BASIC : Beginner's All-Purpose Symbolic Instruction Code 
BCD : Binary Coded Decimal
bin : binary 
BINAC : Binary Automatic Computer 
BIOS : Basic Input Output System
Blob : Binary large object 
BMP : Basic Multilingual Plane

C
CAD : Computer-Aided Design
CAT : Computer-Aided Translation
CC : C Computer
CDMA : Code Division Multiple Access
CD-R : CD-Recordable 
CD-ROM : CD Read-Only Memory
CD-RW : CD-Rewritable
CLI : Command Line Interface
CLR : Common Language Runtime
CPU : Central Processing Unit
CRS : Computer Reservations System
CRT : Cathode Ray Tube
CS : Computer Science
CSE : Computer Science and Engineering
CU : Central Unit

D
DAO : Data Access Objects
DAT : Digital Audio Tape
DB : Database
DBMS : Database Management System
DDR : Double Data Rate
DHTML : Dynamic Hypertext Markup Language
DIVX : Digital Video Express
DL : Download
DLL : Dynamic Link Library
DNS : Domain Name System
DOS : Disk Operating System
DSN : Database Source Name
DTP : Desktop Publishing
DVD : Digital Versatile Disc
DVD : Digital Video Disc
DVD-R : DVD-Recordable
DVD-ROM : DVD-Read Only Memory
DVD-RW : DVD-Rewritable

E
EDSAC : Electronic Delay Storage Automatic Calculator 
EDVAC : Electronic Diserete Variable Automatic Computer
ESD : Electrostatic Discharge
EXE : ExEcutable
EXT : EXTended file system

F
FAQ : Frequently Asked Questions
FDD : Floppy Disk Drive
FLOPS : Floating-Pont Operations Per Second
FOSI : Formatted Output Specificiation Instance
FS : File System 
FSB : Front Side Bus
FTP : File Transfer Protocol
FXP : File eXchange Protocol

G 
Gb : Gigabit 
GB : Gigabyte
GIF : Graphics Interchange Format
GPL : General Public License
GPRS : General Packet Radio Service

H 
HCI : Human Computer Interaction
HCL : Hardware Compatibility List
HD : High Density 
HD DVD : High Definition DVD 
HDD : Hard Disk Drive
HHD : Hybird Hard Drive
HP : Hewlett-Packard
HT : Hyper Threading
HTM : Hierarchical Temporal Memory
HTML : Hypertext Markup Language
HTTP : Hypertext Transfer Protocol
Hz : Hertz

I 
I/O : Input/Output
IBM : International Business Machines
IC : Integrated Circuit
ICMP : Internet Control Message Protocol
ICT : Information and Communication Technology
IE : Internet Explorer
IIS : Internet Information Services
IM : Instant Messaging
IMAP : Internet Message Access Protocol
IP : Intellectual Property /Internet Protocol
IP : Internet Protocol
IrDA : Infrared Data Association
ISDN : Integrated Service Digital Network
ISP : Internet Service Provider
IT : Information Technology

J
J2EE : Java 2 Enterprise Edition
J2ME : Java 2 Micro Edition
J2SE : Java 2 Standard Edition
JDK : Java Development Kit
JDS : Java Desktop System
JFC : Java Foundation Classes
JPEG : Joint Photographic Experts Group
JRE : Java Runtime Environment
JS : JavaScript

K 
Kb : Kilobit
KB : Kilobyte
kHz : Kilohertz
KVM : Keyboard, Video Mouse

L 
LAN : Local Area Network
LCD : Liquid Crystal Display
LED : Light-Emitting Diode

M 
Mb : Megabit
MB : Megabyte
MBR : Master Boot Record
MHz : Megahertz
MNG : Multiple-image Network Graphics
MS : Memory Stick
MS : Microsoft
MS-DOS : Microsoft DOS

N 
NaN : Not a Number
NAS : Network-Attached Storage
NEXT : Near-End Cross Talk
NIC : Network Interface Controller
NTFS : NT Filesystem

O
OLED : Organic Light Emitting Diode
OMF : Object Module Format
OS : Open Source 
OS : Operating System

P 
P2P : Peer-To-Peer
PAC : Programmable Automation Controller
PAN : Personal Area Network
PAP : Password Authentication Protocol
PATA : Parallel ATA
PC : Personal Computer
PGA : Pin Grid Array
PHP : PHP: Hypertext Preprocessor
PNG : Portable Network Graphics
POST : Power-On Self Test
PSU : Power Supply Unit

Q
QA : Quality Assurance
QFP : Quad Flat Package

R
RAM : Random Access Memory
RF : Radio Frequency 
RGB : Red, Green, Blue (RGBA : Red, Green, Blue, Alpha)
RGBA : Red, Green, Blue, Alpha
RIP : Raster Image Processor
RIP : Routing Information Protocol
ROM : Read Only Memory
ROM-DOS : Read Only Memory - Disk Operating System

S
SATA : Serial ATA
SCSI : Small Computer System Interface
SD : Secure Digital
SDK : Software Development Kit
SDN : Service Delivery Network
SDR : Software-Defined Radio
SIMD : Single Instruction, Multiple Data
SIMM : Single Inline Memory Module
SP : Service Pack
SPI : Serial Peripheral Interface
SVG : Scalable Vector Graphics
SVGA : Super Video Graphics Array

T
TB : Tera Byte
TDMA : Time Division Multiple Access
tmp : temporary
TRON : The Real-time Operating System Nucleus
TTF : True Type Font
TTL : Transistor-Transistor Logic

U
UAC : User Account Control
UPS : Uninterruptible Power Supply
URI : Uniform Resource Identifier
URL : Uniform Resource Locator
USB : Universal Serial Bus
UTF : Unicode Transformation Format
UTP : Unshielded Twisted Pair
UUID : Universally Unique Identifier
UUN : Universal User Name

V
VB : Visual Basic
VBA : Visual Basic for Applications
VBS : Visual Basic Script
VGA : Video Graphics Array
VT : Video Terminal

W
W3C : World Wide Web Consortium
WAN : Wide Area Network
WAP : Wireless Access Point /Wireless Application Protocol
WLAN : Wireless Local Area Network
WMA : Windows Media Audio
WMV : Windows Media Video
WPAN : Wireless Personal Area Network
WWN : World Wide Name
WWW : World Wide Web
XAML : extensible Application Markup Language
XML : eXtensible Markup Language
XP : Extreme Programming
XPI : XP install

Y
Y2K : Year Two Thousand

Z
ZCS : Zero Code Suppression
ZIF : Zero Insertion Force
ZIFS : Zero Insertion Force Socket

Popular Indian Acronyms and Abbreviations

A
A.A.F. – Auxiliary Air Force
A.A.O.U. – Asian Association of Open Universities
A.C.D. – Asian Co-operation Dialogue
A.D.B. – Asian Development Bank
A.D.S. – Air Defence Ship
A.E.C. – Atomic Energy Commission
A.H.Q. – Air Head Quarters; Army Head Quarters
A.I.C.C. – All India Congress Committee
A.I.D.S. – Acquired Immune Deficiency Syndrome
A.I.R. – Annual Information Report
A.J.T. – Advanced Jet Trainer
A.N.C. – African National Council
A.P.E.C. Asia-Pacific Economic Corporation
A.P.E.D.A. – Agricultural and Processed Food Products Export Development Authority
A.R.C. – Administrative Reforms Commission; Asset Reconstruction Corporation (of India)
A.S.E.A.N. – Association of South East Asian Nations
A.S.I. – Archaeological Survey of India
A.U. – African Union
A.V.E.S. – Acute Viral Encephalitic Syndrome

B

B.A.R.C. – Bhabha Atomic Research Centre
B.C.G. – Bacillus Calmette Guerin (Anti-T.B. vaccine)
BIMSTEC – Bangladesh, India, Myanmar, Sri Lanka, Thailand Economic Corporation
B.S.N.L. – Bharat Sanchar Nigam Ltd.
B.O.A.C. – British Overseas Airways Corporation
B.R.E.A.D. – Basic Research Education and Development Society
B.V.R. – Beyond Visual Range

C

C.A.B.E. – Central Advisory Board of Education
C.A.C.C.I. – Confederation of Asia-Pacific Chambers of Commerce and Industry
C.M.P. – Common Minimum Programme
C.A.D.P. – Command Area Development Programme
C.A.S. – Conditional Access System
C.C.I. – Cricket Club of India
C.D.M.A. – Code Division Multiple Access
C.H.O.G.M. – Commonwealth Heads of Government Meeting
C.I.A. – Central Intelligence Agency (U.S.A.)
C.N.G. – Compressed Natural Gas
C.N.L.U. – Chanakya National Law University
C.N.P.C. – China National Petroleum Corporation
C.S.I.R. – Council of Scientific and Industrial Research
C.S.T.O. – Collective Security Treaty Organisation

D
D.A.E. – Department of Atomic Energy
D.D.T. – Dichloro Diphenyl Trichloro-ethane
D.I.A.S. – Direct Internet Access System
D.M.R.C. – Delhi Metro Rail Corporation
D.O.A.R.T. – Deep Ocean Assessment and Reporting Technology
D.P.P. – Dabhol Power Project
D.Litt. – Doctor of Literature
D.V.C. – Damodar Valley Corporation

E
E.A.S. – East Asia Summit
E.C.I.L. – Electronics Corporation of India Limited
E.D.C.I.L. – Educational Consultants India Ltd.
E.D.I. – Educational Development Index
EDUSAT – Education Satellite
E.E.C. – Eurasian Economic Community; European Economic Community
E.E.T. – Exempt, Exempt, Taxable
E.P.I.C. – Elector’s Photo Identity Card
E.S.C.A.P. – Economic and Social Commission for Asia and the Pacific (This is the new name of ECAFE)

F
F.D.I. – Foreign Direct Investment
F.E.M.A. – Foreign Exchange Management Act.
F.I.C.A. – Federation of International Cricketer’s Association
F.T.A. – Free Trade Agreement

G
G.A.T.T. – General Agreement on Tariffs and Trade
G.D.P. – Gross Domestic Product
G.I.C. – General Insurance Corporation (of India)
G.I.S.T. – Global Institute of Science and Technology
G.N.P. – Gross National Product
G.U.A.M. – Georgia, Ukraine, Azerbaijan and Moldova

H
H.D.F.C. – Housing Development Finance Corporation
H.U.D.C.O. – Housing and Urban Development Corporation

I 
I.A.A.I. – International Airport Authority of India
I.B.S.A. – India, Brazil, South Africa
I.C.R.I.E.R. – Indian Council for Research on International Economic Relations
I.C.S.I.D. – International Centre for Settlement of Industrial Disputes
I.C.R.C. – International Committee of the Red Cross
I.C.S.S.R. – Indian Council of Scientific and Social Research
I.D.P.L. – Indian Drugs and Pharmaceuticals Limited
I.F.P.R.I. – International Food Policy Research Institute (Located in Washington)
I.F.W.J. – Indian Federation of Working Journalists
I.C.A.R. – Indian Council of Agricultural Research
I.D.A. – International Development Association
I.G.C.A.R. – Indira Gandhi Centre for Atomic Research
I.G.M.D.P. – Integrated Guided Missile Development Programme
I.G.N.C.A. – Indira Gandhi National Centre for Arts
I.I.F.A. – International Indian Film Academy
I.M.D.T. – Illegal Migrants (Determination by Tribunals) Act, 1983
I.M.F. – International Monetary Fund
I.M.O. – Instant Money Order
I.N.S. – Indian News Paper Society
INSDOC – Indian National Scientific Documentation Centre
I.N.T.U.C. – Indian National Trade Union Congress
I.N.T.A.C.H. – Indian National Trust for Art and Cultural Heritage
I.N.X.F.A.C. – Indian Naval Extra-Fast Attact Craft
I.S.I. – Inter Services Intelligence (Pakistan)
I.S.T. – Indian Standards Time
I.S.R.O. – Indian Space Research Organisation
I.S.S.P. – Indian Scientific Satellite Project
I.T.E.R. – International Thermonuclear Experimental Reactor
I.T.E.S. – Information Technology Enabled Services
I.U.C.N. – International Union for Conservation of Nature
I.U.P.E.P. – Integrated Urban Poverty Eradication Programme

J
J.V.P. – Janatha Vimukthi Peramuna
LL.I.B.O.R. – London Inter Bank Offered Rate

M
M.A.I. – Multilateral Agreement on Investment
M.C.C. – Marylebone Cricket Club
M.D.M.A. – Multi Disciplinary Monitoring Agency
M.F.A.L.A. – Marginal Farmers and Agricultural Labourers Agency
M.N.N.A. – Major Non-NATO Alley
M.R.T.P.C. – Monopolies and Restrictive Trade Practices Commission

N
N.A.D.T. – National Authority on Drugs and Therapeutics
N.A.R.I. – National AIDS Research Institute
NATO – North Atlantic Treaty Organisation
N.B.R.A. – National Biotechnology Regulatory Authority
N.C.H.R.H. – National Council for Human Resource in Health.
N.C.A. – National Cricket Academy
N.E.A. – National Environment Authority
N.E.G.P. National E-governance Plan
N.I.F. – National Innovative Foundation
N.I.S.M. – National Institute of Securities Market
N.L.L.M. – National Legal Literacy Mission
N.M.C.C. – National Manufacturing Competitiveness Council
N.M.I.T.L.I. – New Millennium Indian Technology Leadership Initiative
N.P.T. – Nuclear Non-Proliferation Treaty
N.R.C. – Nuclear Regulatory Commission
N.R.E.G.A. – National Rural Employment Guarantee Act.
N.R.H.M. – National Rural Health Mission
N.R.I. – Non-Resident Indians
N.R.S.A. – National Remote Sensing Agency
N.S.C.N. – National Social Council of Nagaland
N.U.E.P.A. – National University of Educational Planning and Administration

O
O.I.C. – Overseas Indian Citizenship
O.I.G.S. – On Indian Government Service
OIL – Oil India Limited
O.N.G.C. – Oil and Natural Gas Corporation

P
P.A.C. – Public Accounts Committee; Professional Aptitude Council
P.A.N. – Permanent Account Number
P.E.S.O. – Petroleum and Explosives Safety Organisation (PESO is the changed name of Department of Explosives).
P.E.T.A. – People for the Ethical Treatment of Animals
P.F.R.D.A. – Pension Fund Regulatory and Development Authority
P.H.D.C.C.I. – Progress, Harmony and Development Chambers of Commerce and Industry
P.I.L. – Public Interest Litigation
P.N.R. – Passenger Numerical Record
P.O.S.C.O. – Pohang Steel Company
P.O.T.A. – Prevention of Terrorism Act
P.T.C. – Power Trading Corporation

Q
Q.I.P. – Qualified Institutional Placement

R
R.A.F. – Rapid Action Force
R.S.V.P. – Repondez sil vous Plait (Fr.) reply, if you please
R.T.R.A. – Rail Tariff Regulatory Authority

S
SAIL – Steel Authority of India Limited
SAPTA – South Asian Preferential Trade Agreement
S.C.O. – Shanghai Cooperation Organisation
S.C.R.A.M.J.E.T. – Supersonic Combustion Ramjet
S.E.W.A. – Self-Employed Women’s Association
S.G.R.Y. – Sampoorna Grameen Rojgar Yojana
S.G.S.Y. – Swarnjayanti Gram Swarozgar Yojana
S.M.S. – Short Message Service; Subscriber Management System
SNIPES – Society for the National Institutes of Physical Education and Sports
S.W.A.P.O. – South-West African People’s Organization

T
TELCO – Tata Engineering and Locomotive Company
T.E.R.C. – Trade and Economic Relations Committee
T.E.R.L.S. – Thumba Equatorial Rocket Launching Station
T.R.A. – Tea Research Association
T.R.A.I. – Telecom Regulatory Authority of India
TWAS – Third World Academy of Sciences

U
U.D.C. – University Development Commission
U.N.C.L.O.S. – UN Convention on the Law of the Sea
U.N.C.T.A.D. – United Nations Conference of Trade and Development
U.G.C. – University Grants Commission
U.N.E.S.C.O. – United Nations Educational Scientific and Cultural Organisation
U.N.F.C.C.C. – United Nations Framework Convention on Climate Change
U.N.I.C.E.F. – United Nations International Children’s Emergency Fund
U.N.I.F.I.L. – United Nations Interim Force in Lebanon
U.P.A. – United Progressive Alliance

V
V.B.A.L. – Value Based Advanced Licencing
V.D.I.S. – Voluntary Disclosure of Income Scheme
V.S.S.C. – Vikram Sarabhai Space Centre
V.A.T. – Value Added Tax

W
W.C.C.B. – Wildlife Crime Control Bureau
W.C.A.R. – World Conference Against Racism
W.E.F. – World Environment Forum
W.G.I.G. – Working Group on Internet Governance
W.F.C. – World Food Council
W.I.P.O. – World Intellectual Property Organisation
W.L.L.–M. – Mobile Wireless in Local Loop
W.S.I.S. – World Summit on Information Society
W.T.O. – World Trade Organisation
W.W.F. – World Wild Life Fund; War Wounded Foundation

Y
Y.M.C.A. – Young Men’s Christian Association
Y.W.C.A. – Young Women’s Christian Association

Z
Z.S. – Zoological Society