This section contains frequently asked abbreviation in various exams and useful for CUET, SSC, Railways, Banking, CTET and other Competitive Examinations.
ABBREVIATION started with the Alphabet – A
AD – Active Directory
ADC – Analog to Digital Convertor
ARP – Address Resolution Protocol
AH – Active Hub
AI – Artificial Intelligence
AL – Active Link
ALGOL– Algorithmic Language
ALU – Arithmetic Logic Unit
AM – Active Monitor
APCI – Application layer Protocol Control Information
API – Application Program Interface
ASCII – American Standard Code for Information Interchange
ATM – Automated Teller Machine
ADF – Automatic Document Feeder
ABBREVIATION started with the Alphabet – B
BINAC – Binary Automatic Computer
Bcc – Blind Carbon Copy
BMP – Bitmap
BASIC – Beginner’s All purpose Symbolic Instruction Code
BCD – Binary Coded Decimal
BCR – Bar Code Reader
BD – Blu-ray Disc
Bin – Binary
BIOS – Basic Input Output System
B2B – Business to Business
Bit – Binary Digit
BLOG – Web Log
BPI – Bytes/Bits Per Inch
BPL – Broadband over Power Line
BPS – Bits Per Second
BSNL – Bharat Sanchar Nigam Limited
ABBREVIATION started with the Alphabet – C
Cc – Carbon Copy
CMOS – Complementary Metal Oxide Semiconductor
CAD – Computer Aided Design
COBOL – Common Business Oriented Language
CD – Compact Disc
COMAL – Common Algorithmic Language
CPU – Central Processing Unit
CRT – Cathod Ray Tube
CSS – Cascading Style Sheet
CU – Control Unit
CTCP – Client-To-Client Protocol
CD-R – Compact Disc Recordable
CD-ROM – Compact Disc Read Only Memory
CD-RW – Compact Disc Rewritable
CD-R/W – Compact Disc-Read/Write
CG – Computer Graphics
CGI – Common Gateway Interface
COM – Common Object Mode
CLI – Command Line Interface
CLR – Common Language Runtime
CDMA – Code Division Multiple Access
ABBREVIATION started with the Alphabet – D
DAC – Digital to Analog Convertor
DAP – Directory Access Protocol
DB – Database
DBA – Database Administrator
DBMS – Database Management System
DCC – Direct Client-to-Client
DCL – Data Control Language
DFS – Distributed File System
DHTML – Dynamic HyperText Markup Language
DLL – Dynamic Link Library
DLP – Digital Light Processing
DMA – Direct Memory Access
DNS – Domain Name System
DPI – Dots Per Inch
DRAM – Dynamic Random Access Memory
DRDO – Defence Research and Development Organisation
DSL – Digital Subscriber Line
DTP – Desktop Publishing
DVD – Digital Video Disc/Digital Versatile Disc
DVD–R – Digital Video Disc-Recordable
DVD-ROM – DVD-Read Only Memory
DVD-RW – DVD-Rewritable
DVR – Digital Video Recorder
DOS – Disk Operating System
ABBREVIATION started with the Alphabet – E
EBCDIC -Extended Binary Coded Decimal Interchange Code
E-Commerce – Electronic Commerce
EDO – Extended Data Out
EDP – Electronic Data Processing
EDSAC – Electronic Delay Storage Automatic Calculator
EEPROM – Electrically Erasable Programmable Read Only Memory
E-Mail – Electronic Mail ENIAC Electronic Numerical Integrator And Computer
EOF – End Of File
EPROM – Erasable Programmable Read Only Memory
EXE – Executable EDI Electronic Data Interchange
ABBREVIATION started with the Alphabet – F
FAT – File Allocation Table
FAX – Facsimile
FDC – Floppy Disk Controller
FDD – Floppy Disk Drive
FIFO – First In First Out
FORTRAN – Formula Translation
FPU – Floating Point Unit
FS – File System
FTP – File Transfer Protocol
FPS – Frame Per Second
FLOPS – Floating Point Operations Per Second
FAQ – Frequently Asked Question
ABBREVIATION started with the Alphabet – G
Gb – Gigabit
GB – Gigabyte
GIF – Graphics Interchange Format
GIGO – Garbage In Garbage Out
GPU – Graphics Processing Unit
GSM – Global System for Mobile communication
GUI – Graphical User Interface
ABBREVIATION started with the Alphabet – H
HLL – High Level Language
HPFS – High Performance File System
HDD – Hard Disk Drive
HSM – Hierarchical Storage Management
HTML – HyperText Markup Language
HTTP – HyperText Transfer Protocol
ABBREVIATION started with the Alphabet – I
IBM – International Business Machine
IS – Information System
IM – Instant Message
IMAP – Internet Message Access Protocol
iOS– iphone Operating System
IP – Internet Protocol
ISDN -Integrated Services Digital Network
ISOC– Internet Society
ISP – Internet Service Provider
ISR – Interrupt Service Routine
IT – Information Technology
ABBREVIATION started with the Alphabet – J
JPEG – Joint Photographic Experts Group
JRE – Java Runtime Environment
JS – Java Script
ABBREVIATION started with the Alphabet – K
Kb – Kilobit
KB – Kilobyte
KHz – Kilohertz
Kbps – Kilobit Per Second
ABBREVIATION started with the Alphabet – L
LAN – Local Area Network
LCD – Liquid Crystal Display
LDU – Liquid Display Unit
LED – Light Emitting Diode
LIFO – Last In First Out
LPI – Lines Per Inch
LIPS – List Processing
ABBREVIATION started with the Alphabet – M
MAN – Metropolitan Area Network
Mb – Megabit
MB – Megabyte
MBR – Master Boot Record
MAC – Media Access Control
MPEG – Moving Picture Experts Group
MMS – Multimedia Messaging Service
MIME – Multipurpose Internet Mail Extensions
MSN – Microsoft Network
MDI – Multiple Document Interface
MICR – Magnetic Ink Character Recognition
MIMO – Multiple-Input Multiple-Output
MIPS – Million Instructions Per Second
MIDI – Musical Instrument Digital Interface
ABBREVIATION started with the Alphabet – N
NFS – Network File System
NIC – Network Interface Card
NOS – Network Operating System
ABBREVIATION started with the Alphabet – O
OCR – Optical Character Recognition
OMR – Optical Mark Reader
OOP – Object Oriented Programming
OS – Operating System
OSS – Open Source Software
OLE – Object Linking and Embedding
ABBREVIATION started with the Alphabet – P
P2P – Peer-to-Peer
PAN – Personal Area Network
PAP – Password Authentication Protocol
PC – Personal Computer
PCL – Printed Command Language
PDF – Portable Document Format
PDL – Program Design Language
PIO – Programmed Input/Output
PLA – Programmable Logic Array
PL 1 – Programming Language 1
PnP – Plug and Play
POS – Point Of Sales
PPM – Pages Per Minute
PPP – Point-to-Point Protocol
PPTP – Point-to-Point Tunneling Protocol
PROM – Programmable Read Only Memory
PSTN – Public Switched Telephone Network
PSU – Power Supply Unit
POST – Power On Self Test
ABBREVIATION started with the Alphabet – Q
QDR – Quad Data Rate
QoS – Quality of Service
QBE – Query By Example
ABBREVIATION started with the Alphabet – R
RAM – Random Access Memory
RARP – Reverse Address Resolution Protocol
RDBMS – Relational Database Management System
RIP – Routing Information Protocol
ROM – Read Only Memory
ROMB – Read Out Motherboard
RPG – Report Program Generator
RTOS – Real Time Operating System
RTF – Rich Text Format
ABBREVIATION started with the Alphabet – S
SaaS – Software as a Service
SAN – Storage Area Network
SCSI – Small Computer System Interface
SDL – Simple Direct Media Layer
SMTP – Simple Mail Transfer Protocol
SNOBOL – String Oriented and Symbolic Language SP Service Pack
SQL – Structured Query Language
SRAM – Static Random Access Memory
SVD – Structured VLSI Design
SNMP – Simple Network Management Protocol
SIM – Subscriber Identification Module
ABBREVIATION started with the Alphabet – T
TCP – Transmission Control Protocol
TDMA – Time Division Multiple Access
TTA – True Tap Audio
TTF – True Type Font
TTS – Text-To-Speech
TTY – Tele Type
TFT – Thin-Film Transistor
TB – Terabytes
ABBREVIATION started with the Alphabet – U
UAC – User Account Control UI User Interface
UPS – Uninterruptible Power Supply
URI – Uniform Resource Identifier
URL – Uniform Resource Locator
URN – Uniform Resource Name
USB – Universal Serial Bus
ULSI – Ultra Large Scale Integration
UNIVAC – Universal Automatic Computer
UTP – Unshielded Twisted Pair
ABBREVIATION started with the Alphabet – V
VAR – Variable
VB – Visual Basic
VDD – Virtual Device Driver
VGA – Video Graphics Array
VLAN – Virtual Local Area Network
VM – Virtual Memory
VMS – Video Memory System
VPN – Virtual Private Network
VT – Video Terminal
VSNL – Videsh Sanchar Nigam Limited
VDU – Visual Display Unit
VLSI – Very Large Scale Integration
VRAM – Video Random Access Memory
ABBREVIATION started with the Alphabet – W
WAN – Wide Area Network
WAP – Wireless Application Protocol
Wi-Fi – Wireless Fidelity
WiMax- Worldwide Interoperability for Microwave Access
WINS – Windows Internet Naming Service
WLAN – Wireless Local Area Network
WMA – Wireless Media Audio
WMV – Wireless Media Video
WPA – Wi-Fi Protected Access
WWAN – Wireless Wide Area Network
WWW – World Wide Web
WLL – Wireless Local Loop
WORM – Write Once Read Many
ABBREVIATION started with the Alphabet – X
XHTML – eXtensible HyperText Markup Language
XML – eXtensible Markup Language
XNS – Xerox Network Services
XUL – XML User interface Language
ABBREVIATION started with the Alphabet – Y
YB – Yotta byte
ABBREVIATION started with the Alphabet – Z
ZIFS – Zero Insertion Force Socket
ZIP – Zone Information Protocol
ZISC – Zone Instruction Set Computer
ZMA – Zone Multicast Address
ZNA – Zone Network Administration
ZB – Zettabyte