No.

Acronym

Full Form

1

.aiff

Audio Interchange File Format

2

.asf

 Advanced Systems Format

3

.avi

Audio Video Interleave

4

.bat

Microsoft’s Batch Processing

5

.bmp

Windows Bitmap

6

.bwf

Broadcast Wave Format

7

.csv

Comma Separated Values

8

.dat

Digital Audio Tape

9

.divX

Digital Video Express (DivX-encoded Movie)

10

.docm

Document (with Macros)

11

.docx

Document (without Macros)

12

.flv

Flash Video

13

.gif

Graphics Interchange Format

14

.js

 Javascript (Document)

15

.me

 Readme Text File

16

.mp3

 MPEG Audio Layer 3

17

.mp4

 MPEG Layer 4

18

.mpeg

 Moving Picture Experts Group

19

.pdf

 Portable Document Format

20

.ppt

 PowerPoint Presentation

21

.psd

 Photoshop Document

22

.rtf

Rich Text File

23

.txt

 Text/Plain

24

.wav

 Waveform PCM Audio

25

.wma

 Windows Media Audio

26

.wmv

 Windows Media Video

27

.xls

Excel File (Spreadsheet)

28

3GP

 3rd Generation Project

29

3GPP

 3rd Generation Partnership Project

30

AAC

Advanced Audio Coding

31

ABI

 Application Binary Interface

32

ABR

 Available Bit Rate

33

ACL

Access Control List

34

ACPI

 Advanced Configuration And Power Interface

35

AD

 Active Directory

36

ADC

 Analog – to – Digital Converter

37

ADSL

 Asymmetric Digital Subscriber Line

38

AES

Advanced Encryption System

39

AGP

 Accelerated Graphics Port

40

AHA

 Accelerated Hub Architecture

41

AI

Artificial Intelligence

42

AITS

Administrative Information Technology Services

43

AJAX

Asynchronous JavaScript and XML

44

ALGOL

ALGOrithmic Language

45

ALU

 Arithmetic Logical Unit

46

AMD

 Advanced Micro Devices

47

AMR

 Adaptive Multi-Rate

48

ANSI

 American National Standards Institute

49

API

 Application Programming Interface

50

APIPA

 Automatic Private Internet Protocol Addressing

51

APK

Android Application Package

52

APL

Automatic Programming Language

53

APM

 Advanced Power Management 

54

ARP

 Address Resolution Protocol

55

ARPANET

 Advanced Research Project Agency Network

56

ASCII

American Standard Code for Information Interchange

57

ASIC

 Application Specific Integration circuit

58

ASL

 Age Sex Location

59

ASP

 Active Server Pages

60

ASP

 Application Service Provider

61

ASR

 Automated System Recovery

62

AST

 Abstract Syntax Tree

63

ATM

Automatic Teller Machine

64

AVC

 Advanced Video Coding

65

AVI

 Audio Video Interleave

66

AWT

Abstract Window Toolkit

67

BAL

 Basic Assembly Language

68

BASIC

Beginners All-purpose Symbolic Instruction Code

69

BCC

 Blind Carbon Copy

70

BCD

 Binary Coded Decimal

71

BCPL

Basic Combined Programming Language

72

BCR

 Bar Code Reader

73

BER

 Bit Error Rate

74

BFD

 Binary File Descriptor

75

BGP

 Border Gateway Protocol

76

BHIM

Bharat Interface for Money

77

BiDi

 Bi–Directional

78

BINAC

 Binary Automatic Computer

79

BIOS

 Basic Input Output System

80

BLOB

 Binary large Object

81

BMP

 Bitmap

82

BOPL

Basic Object Programming Language

83

BPI

 Bytes Per Inch

84

BPS

 Bits Per Second

85

BW

 Bandwidth

86

BY

 Bronto-bytes

87

CAD

 Computer Aided Design

88

CAE

 Computer–Aided Engineering

89

CAI

 Computer–Aided Instruction

90

CAM

 Computer Aided Manufacturing

91

CAQA

 Computer–Aided Quality Assurance

92

CC

Carbon Copy

93

CCD

 Charged Coupled Device

94

C-DAC

Centre for Development of Advanced Computing

95

C-DOT

Centre for Development of Telemetric

96

CD

Compact Disk

97

CD-R

Compact Disc Recordable

98

CD-ROM

Compact Disk Read Only Memory

99

CD -RW

Compact Disc Re-Writable

100

CDMA

 Code Division Multiple Access

101

CGA

 Color Graphics Array

102

CGI

 Common Gateway Interface

103

CIFS

 Common Internet File System

104

CIM

 Common Information Model

105

CISC

Complex Instruction Set Computing

106

CLI

 Command Line Interface

107

CMD

 Command

108

CMOS

 Complementary Metal–Oxide Semiconductor

109

CNR

 Communication Network Riser

110

COMPUTER

 Commonly Operated Machine Particularly Used for Technology Education and Research

111

COBOL

Common Business Oriented Language

112

COM

Component Object Module

113

CPI

Character Per Inch

114

CPU

Central Processing Unit

115

CRC

 Cyclic Redundancy Check

116

CRIMM

 Continuity-Rambus Inline Memory Module

117

CRM

 Customer Relationship Management

118

CRS

 Computer Reservation System

119

CRT

Cathode Ray Tube

120

CSI

 Common System Interface

121

CSMA

 Carrier Sense Multiple Access

122

CSS

Cascading Style Sheets

123

CSV

 Comma–Separated Values

124

CTCP

 Client–to–Client Protocol

125

CTL

 Computation Tree Logic

126

CTS

 Clear to Send

127

CU

Control Unit

128

CUA

 Common User Access

129

DAC

 Discretionary Access Control

130

DAO

 Data Access Objects

131

DAP

 Direct Access Protocol

132

DAT

 Digital Audio Tape

133

DBA

 Database Administrator

134

DBMS

Data Base Management System

135

DBSN

 Database Source Name 

136

DCE

 Distributed Computing Environment

137

DDR

 Double Data Rate

138

DDS

 Digital Data Storage

139

DEC

 Digital Equipment Corporation

140

DFD

 Data Flow Diagram

141

DFS

 Distributed File System

142

DHCP

 Dynamic Host Configuration Protocol

143

DHTML

Dynamic Hyper Text Markup Language

144

DIMM

 Dual In-Line Memory Module

145

DIVX

 Digital Video Express

146

DLL

 Dynamic Link Library

147

DLP

 Digital Light Processing

148

DMP

Dot Matric Printer

149

DMS

Database Migration Service

150

DNS

Domain Name System

151

DMA

 Direct Memory Access

152

DOC

 Document (Microsoft Corporation)

153

DOS

 Disk Operating System

154

DPI

 Dots Per Inch

155

DPMS

 Display Power Management Signaling

156

DPSI

Dot Per Square Inch

157

DQL

Data Query Language

158

DRAM

 Dynamic Random-Access Memory

159

DSA

Digital Signature Algorithm

160

DSHD

 Double Sided High Density

161

DSL

 Digital Subscriber Line

162

DSL

 Domain–Specific Language

163

DTE

 Data Terminal Equipment

164

DTP

 Desk-Top Publishing

165

DTR

 Data Terminal Ready

166

DTS

 Digital Theater System

167

DVD

Digital Versatile Disk

168

DVE

 Digital Video Effects

169

DVI

 Digital Visual Interface

170

DVR

 Digital Video Recorder

171

DVX

DivX Video

172

EB

 Exa-bytes

173

EBCDIC

 Extended Binary Coded Decimal Interchange Code

174

ECC

 Excise Control Code

175

ECP

 Extended Capabilities Port

176

EDGE

Enhanced Data Rate for GSM

177

EDP

 Electronic Data Processing

178

EEPROM

 Electrically Erasable Programmable Read-Only Memory

179

EFS

 Encrypting File System

180

EFT

 Electronic Fund Transfer

181

EGA

Enhanced Graphics Adapter

182

EIDE

 Enhanced Integrated Drive Electronics

183

EIGRP

 Enhanced Interior Gateway Routing Protocol

184

ELF

 Executable and Linkable Format

185

E-Mail

Electronic Mail

186

EMI

 Electro-Magnetic Interference

187

EMP

 Electro-Magnetic Pulse

188

ENIAC

Electronic Numerical Integrator and Calculator

189

EPP

 Enhanced Parallel Port

190

EPROM

 Erasable Programmable Read Only Memory

191

ERD

 Emergency Repair Disk

192

ERNET

 Education and Research Network

193

ERP

 Enterprise Resource Planning

194

ESD

 Electro Static Discharge

195

EVDO

 Evolution Data Optimized Or Evolution Data Only

196

FAT

 File Allocation Table

197

FCS

 Frame Check Sequence

198

FDC

 Floppy Disk Controller

199

FDD

 Floppy Disk Drive

200

FDDI

 Fiber Distributed Data Interface

201

FDMA

 Frequency-Division Multiple Access

202

FHS

 Filesystem Hierarchy Standard

203

FIFO

First In, First Out

204

FM

Frequency Modulation

205

FOSS

Free and open-source software

206

FORTRAN

Formula Translation

207

FPU

 Floating Point Unit

208

FSK

Frequency Shift Keying

209

FTP

 File Transfer Protocol

210

FXP

 File Exchange Protocol

211

FYA

 For Your Action

212

FYI

 For Your Information

213

GB

 Giga-bytes

214

GBPS

 Gigabits Per Second

215

GCR

 Group Code Recording

216

GDI

 Graphics Device Interface

217

GIF

Graphics Interchange Format

218

GIGO

 Garbage In Garbage Out

219

GIS

 Geographical Information system

220

GP

 Graphics port

221

GPL

 General Public License

222

GPRS

General Packet Radio Service

223

GPS

 Global Positioning System

224

GPU

 Graphics Processing Unit

225

GSM

Global System for Mobile Communication

226

GUI

 Graphical User Interface

227

HAL

 Hardware Abstraction Layer

228

HCI

 Human Computer Interaction

229

HCL

 Hardware Compatibility List

230

HDD

 Hard Disk Drive

231

HHD

 Hybrid Hard Drive

232

HID

 Human Interface Device

233

HLL

High Level Language

234

HP

 Hewlett Packard

235

HPFS

 High Performance File System

236

HSDPA

 High Speed Downlink Packet Access

237

HTM

 Hierarchical Temporal Memory

238

HTML

Hyper Text Markup Language

239

HTTP

 Hyper Text Transfer Protocol

240

HTTPS

 Hyper Text Transfer Protocol Secure

241

HTX

 Hyper Transport Expansion

242

HVD

 Holographic Versatile Disk

243

IBM

International Business Machines

244

IC

Integrated Circuit

245

ICP

 Internet Cache Protocol

246

ICT

Information and Communications Technology

247

ICR

 Intelligent Character Recognition

248

ICS

 Internet Connection Sharing

249

IFSC

Indian Financial System Code

250

IGMP

 Internet Group Management Protocol

251

IGRP

 Interior Gateway Routing Protocol

252

IIOP

 Internet Inter-ORB Protocol

253

IIS

 Internet Information Services

254

IMAP

 Internet Message Access Protocol

255

IMPS

Immediate Fund Transfer Service

256

IOPS

Input/output Operations Per Second

257

IOS

 Internetwork Operating System

258

iOS

 iPhone Operating System

259

IP

 Internet Protocol

260

IPC

 Inter-Process Communication

261

IPP

 Internet Printing Protocol

262

IPTV

 Internet Protocol Television

263

IPV4

 Internet Protocol Version 4

264

IPV6

Internet Protocol Version 6

265

IPX

 Internetwork Packet Exchange

266

IRC

 Internet Relay Chat

267

IRQ

 Interrupt Request

268

ISC

 Internet Storm Center

269

ISDN

 Integrated Services Digital Network

270

ISH

 Information Super Highway

271

ISO

 International Organization for Standardization

272

ISP

 Internet Service Provider

273

ISR

 Interrupt Service Routine

274

ITES

Information Technology Enabled Services

275

JAD

Java Application Descriptor

276

JAR

Java Archive

277

JDK

Java Development Kit

278

JPEG

 Joint Photographic Expert Group

279

JPG

 Joint Photographic Experts Group

280

JSP

Java Server Pages

281

KB

 Kilo-bytes

282

KBPS

Kilo Byte Per Second

283

KIPS

Knowledge Information Processing System

284

KYC

Know Your Customer

285

LAN

 Local Area Network

286

LASER

 Light Amplification for Stimulated Emission of Radiation

287

LBA

 Logical Block Addressing

288

LCD

 Liquid Crystal Display

289

LDAP

 Lightweight Directory Access Protocol

290

LED

Light Emitting Diode

291

LISP

List Processing

292

LLC

 Logical Link Control

293

LSB

 Least Significant Bit

294

LSD

Least Significant Digit

295

LSI

Large Scale Integration

296

LTE

 Long Term Evolution

297

M3G

 Mobile 3D Graphics

298

M4A

MPEG-4 Audio File

299

Mac

 Macintosh

300

MAC

 Media Access Control

301

MAN

 Metropolitan Area Network

302

MAPI

 Messaging Application Program Interface

303

MB

Mega-bytes

304

MBCS

 Multi Byte Character Set

305

MBR

 Master Boot Record

306

MBSA

 Microsoft Baseline Security Analyzer

307

MCR

 Multivariant Curve Resolution

308

MDI

 Multiple Document Interface

309

MFA

Multi-Factor Authentication

310

MFD

 Multi-Function Device

311

MFP

 Multi-Function Product

312

MICR

 Magnetic Ink Character Recognition

313

MIDI

 Musical Instrument Digital Interface

314

MIME

 Multipurpose Internet Mail Extensions

315

MIMO

 Multiple-Input Multiple Output

316

MIPS

 Million Instructions Per Second

317

MIS

 Management Information Systems

318

MLI

 Multiple Link Interface

319

MMC

 Microsoft Management Console

320

MMS

Multimedia Messaging Service

321

MMU

 Memory Management Unit

322

MMX

 Multi-Media Extensions

323

MNG

 Multiple-image Network Graphics

324

MODEM

Modulator Demodulator

325

MOSFET

 Metal-Oxide Semiconductor Field Effect Transistor

326

MPEG

 Moving Picture Experts Group

327

MSB

 Most Significant Bit

328

MSD

 Most significant Digit

329

MSDN

 Microsoft Developer Network

330

MS-DOS

Microsoft Disk Operating System

331

MSI

 Medium Scale Integration

332

MSN

 Microsoft Networks

333

MTBF

 Mean Time Between Failure

334

MUI

 Multilingual User Interface

335

MVS

 Multiple Vendor System

336

NAP

 Network Access Points

337

NAP

 Network Access Protection

338

NAS

 Network-Attached Storage

339

NAT

 Network Address Translation

340

NEFT

National Electronic Funds Transfer

341

NFS

 Network File System

342

NIC

 Network Interface Card

343

NICNET

National Informatics Centre Network

344

NIU

 Network Interface Unit

345

NMI

 Non-Maskable Interrupt

346

NNTP

 Network News Transfer Protocol

347

NOS

 Network Operating System

348

NPCI

National Payments Corporation of India

349

NTFS

 New Technology File System

350

NTP

 Network Time Protocol

351

NVRAM

 Non-Volatile Random-Access Memory

352

OCR

 Optical Character Reader

353

OEM

 Original Equipment Manufacturer

354

OLAP

Online Analytical Processing

355

OLTP

Online Transaction Processing

356

OMR

 Optical Mark Recognition

357

OOP

 Object Oriented programming

358

OOPS

 Object-Oriented Programming System

359

OS

 Operating System

360

OSI

 Open Systems Interconnection

361

OSPF

 Open Shortest Path First

362

OSS

Open Source Software

363

OTP

One Time Password

364

P2P

 Peer-To-Peer

365

PAL

 Phase Alternation Line

366

PAN

 Personal Area Network / Permanent Account Number

367

PAP

 Password Authentication Protocol

368

PATA

 Parallel Advanced Technology Attachment

369

PB

 Peta-bytes

370

PC

 Personal Computer

371

PCB

 Process Control Block

372

PCB

Printed Circuit Board

373

PCI

 Peripheral Component Interconnect

374

PDA

 Personal Digital Assistant

375

PDF

 Portable Document Format

376

PERL

Practical Extraction and Reporting Language

377

PFA

 Please Find Attached

378

PHP

Hypertext Preprocessor

379

PIN

 Personal Identification Number

380

PINE

 Program for Internet News & Email

381

PING

 Packet InterNet Groper

382

PIO

 Programmed Input/Output

383

PKI

 Public Key Infrastructure

384

PLC

 Programmable Logic Controller

385

PNG

 Portable Network Graphics

386

POP

 Post Office Protocol

387

POST

 Power on self-test

388

POTS

 Plain Old Telephone Service

389

PPI

 Pixels Per Inch

390

PPM

Pages Per Minute

391

PPP

 Point-to-Point Protocol

392

PPTP

 Point-to-Point Tunneling Protocol

393

PRI

 Primary Rate Interface

394

PROLOG

PROgramming in LOGic

395

PROM

Programmable Read Only Memory

396

PSD

Photo-Shop Document

397

PSTN

 Public Switched Telephone Network

398

PSU

 Power Supply Unit

399

PVC

 Permanent Virtual Circuit

400

QAS

Quality Assurance Service

401

RAIT

 Redundant Array of Inexpensive Tapes

402

RAM

Random Access Memory

403

RAS

 Remote Access Service

404

RDBMS

 Relation Database Management System

405

RDF

 Resource Description Framework

406

RGB

 Red, Green, Blue 

407

RIP

 Routing Information Protocol

408

RIS

 Remote Installation Service

409

ROM

Read Only Memory

410

RPA

Robotic Process Automation

411

RPM

 Red-Hat Package Manager

412

RTGS

Real-Time Gross Settlement

413

RTOS

 Real Time Operating System

414

RTS

 Real Time Streaming

415

SAN

 Storage Area Network

416

SAP

System Application & Products

417

SAS

 Statistical Analysis System

418

SATA

Serial Advanced Technology Attachment

419

SCD

Source Code Disclosure

420

SCSI

 Small Computer System Interface

421

SDK

Software Development Kit

422

SDL

 Software and Documentation Localization

423

SDN

 Service Delivery Network

424

SDR

 Software-Defined Radio

425

SDRAM

Synchronous Dynamic Random Access Memory

426

SEC

 Single Edge Connector

427

SEO

Search Engine Optimization

428

SFC

 System File Checker

429

SGRAM

 Synchronous Graphics Random Access Memory

430

SHDSL

 Single-pair High-speed Digital Subscriber Line

431

SIM

Subscriber Identity Module

432

SIMD

 Single Instruction, Multiple Data

433

SIMM

 Single In-Line Memory Module

434

SIS

 Safety Instrumented System

435

SIS

 Security and Intelligence Services

436

SIS

Symbian OS Installer File

437

SLIP

Serial Line Internet Protocol

438

SMBIOS

 System Management BIOS

439

SMPS

Switched-Mode Power Supply

440

SMS

Short Message Service

441

SMTP

 Simple Mail Transfer Protocol

442

SNMP

 Simple Network Management Protocol

443

SOA

 Service-Oriented Architecture

444

SOAP

 Simple Object Access Protocol

445

SPI

 Serial Peripheral Interface

446

SQL

Structured Query Language

447

SRAM

 Static Random-Access Memory

448

SSD

Solid State Drive

449

SSL

 Secure Sockets Layer

450

STP

 Shielded Twisted Pair

451

SVG

 Scalable Vector Graphics

452

SVGA

 Super Video Graphics Array

453

SWF

 Shock Wave Flash

454

SXGA

 Super Extended Graphics Array

455

TB

 Tera-bytes

456

TCP

Transmission Control Protocol

457

TDM

 Time Division Multiplexing

458

TDR

 Time Domain Reflectometer

459

TFT

Thin Film Transistor

460

TFTP

 Trivial File Transfer Protocol

461

TPU

 Tensor Processing Unit

462

UAC

 User Account Control

463

UART

 Universal Asynchronous Receiver-Transmitter

464

UDP

 User Datagram Protocol

465

UEFI

 Unified Extensible Firmware Interface

466

UHF

 Ultra-High Frequency

467

ULSI

 Ultra Large Scale Integration

468

UMANG

Unified Mobile Application for New-age Governance

469

UMTS

Universal Mobile Telecommunication System

470

UNICS

 UNiplexed Information Computing System

471

UNIVAC

 Universal Automatic Computer

472

UPI

Unified Payments Interface

473

UPS

Uninterruptible Power Supply

474

URI

 Uniform Resource Identifier

475

URL

 Uniform Resource Locator

476

URN

 Uniform Resource Name

477

USB

 Universal Serial Bus

478

USSD

Unstructured Supplementary Service Data

479

UTF

 Unicode Transformation Format

480

UTP

 Unshielded Twisted Pair

481

UTR

Unique Transaction Reference

482

VAN

Value Aided Network

483

VBS

Visual Basic Script

484

VCR

 Video Cassette Recorder

485

VDI

 Virtual Desktop Infrastructure

486

VDU

 Video Display Unit

487

VFS

 Virtual File System

488

VGA

 Video Graphics Array

489

VGCT

 Video Graphics Character Table

490

VHF

 Very High Frequency

491

VIRUS

 Vital Information Resource Under Seized

492

VLAN

 Virtual Local Area Network

493

VLC

 Video LAN Client

494

VLSI

 Very Large Scale Integration

495

VM

 Virtual Memory

496

VoIP

 Voice over Internet Protocol

497

VPN

 Virtual Private Network

498

VPU

 Visual Processing Unit

499

VRAM

 Video Random Access Memory

500

VT

 Video Terminal

501

WAF

Web Application Firewall

502

WAN

 Wide Area Network

503

WAP

 Wireless Application Protocol

504

WAV

 Waveform Audio

505

WBMP

 Wireless BitMap Image

506

WEP

 Wired Equivalent Privacy

507

WIFI

 Wireless Fidelity

508

WINS

 Windows Internet Naming Service

509

WLAN

 Wireless Local Area Network

510

WLL

Wireless Local Loop

511

WMA

 Windows Media Audio

512

WML

Wireless Markup Language

513

WMP

Windows Media Player

514

WMV

 Windows Media Video

515

WPA

 Wireless Protected Access

516

WUSB

 Wireless Universal Serial Bus

517

WUXGA

 Wide Ultra Extended Graphics Array

518

WWAN

 Wireless Wide Area Network

519

WWW

 World Wide Web

520

XGA

 Extended Graphics Array

521

XHTML

Extensible Hypertext Markup Language

522

XMF

 Extensible Music File

523

XML

eXtensible Markup Language

524

XMS

Extended Memory Specification

525

YB

 Yotta-bytes

526

ZB

 Zetta-bytes

527

ZIF

 Zero-Insertion-Force

528

ZIP

 Zigzag Inline Package