Most Common Computer Abbreviations


A computer is a digital electronic machine that can be programmed to carry out sequences of arithmetic or logical operations automatically. Modern computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks

Types of Computer

Depending upon the internal structure and subsequent features and applicability, computer system is categorized as follows −

Mainframe Computer

It is high capacity and costly computer. It is largely used by big organizations where many people can use it simultaneously.

Super Computer

This category of computer is the fastest and also very expensive. A typical supercomputer can solve up to ten trillion individual calculations per second.

Workstation Computer

The computer of this category is a high-end and expensive one. It is exclusively made for complex work purpose.

Workstation Computer

Personal Computer (PC)

It is a low capacity computer developed for single users.

Apple Macintosh (Mac)

It is a sort of personal computer manufactured by Apple company.

Laptop computer (notebook)

It is a handy computer that can be easily carried anywhere.


Tablet and Smartphone

Modern technology has advanced further. It has helped develop computers that are pocket-friendly. Tablets and smartphones are the best examples of such computer.

The characteristics of the computer system are as follows −

Characteristics of Computer


A computer works with much higher speed and accuracy compared to humans while performing mathematical calculations. Computers can process millions (1,000,000) of instructions per second. The time taken by computers for their operations is microseconds and nanoseconds.


Computers perform calculations with 100% accuracy. Errors may occur due to data inconsistency or inaccuracy.


A computer can perform millions of tasks or calculations with the same consistency and accuracy. It doesn’t feel any fatigue or lack of concentration. Its memory also makes it superior to that of human beings.


Versatility refers to the capability of a computer to perform different kinds of works with same accuracy and efficiency.


A computer is reliable as it gives consistent result for similar set of data i.e., if we give same set of input any number of times, we will get the same result.


Computer performs all the tasks automatically i.e. it performs tasks without manual intervention.


A computer has built-in memory called primary memory where it stores data. Secondary storage are removable devices such as CDs, pen drives, etc., which are also used to store data.


ABCAtanasoff Berry Computer
ACMAssociation for Computing Machinery
AIArtificial Intelligence
ALGOLAlgorithic Language
ALUArithmetic Logic Unit
AMDAdvanced Micro Devices
ARPANETAdvanced Research Project Agency Network
ASCIIAmerican Standard Code for Information Interchange
BASICBeginners All-purpose Symbolic Instruction Code
BCDBinary Coded Decimal
BIOSBasic Inpute Output System
BIPSBillions of Instructions Per Second
BPIBytes Per Inch
CADComputer Aided Design
CAEComputer Aided Engineering
CANCampus Area Network
CASEComputer Aided Software Engineering
CDCompact Disk
CDCControl Data Corporation
CD-ROMCompact Disk Read Only Memory
CD-RWCD Read/Write
CLCommand Language
CLICommand Line Interface
COBOLCommon Business Oriented
CODASYLConference On Data Systems
CPUCentral Processing Unit
CRTCathode Ray Tube
DATDigital Audio Tape
DBMSData Base Management System
DBSDemand Based Switching
DDLData Definition Language
DDSDigital Data Storage
DECDigital Equipment Corporation
DMADirect Memory Access
DNADigital Network Architecture
DPIDots Per Inch
DSNDistributed Systems Network
DTSDigital Theater System
DVDDigital Video/Versatile Disk
EBCDICExtended Binary Coded Decimal Interchange Code
EDSACElectronic Delay Storage Automatic Calculator
EDVACElectronic Discrete Variable Automatic Calculator
EFMEight-to-Fourteen Modulation
ENIACElectronic Numerical Integrator And Calculator
EPGElectronic Programming Guide
EPICExplicitly Parallel Instruction Computing
EPROMErasable Programmable Read-Only Memory
FATFile Allocation Table
FDMFrequency Division Multiplexing
FEPFront End Processor
FLOPSFloating Point Operations Per Second
FMFrequency Modulation
FMSFile Management System
FSKFrequency Shift Keying
FTPFile Transfer Protocol
GBGiga Bytes
GHzGiga Hertz
GNUGnu Not Unix
GPRSGeneral Packet Radio Service
GSMGlobal System for Mobile communication
GUIGraphical User Interface
HPHewlett Packard
HSSHierarchical Storage System
HTMLHyperText Markup Language
HTTPHyperText Transport Protocol
IBMInternational Business Machine
ICIntegrated Circuit
IDNIntegrated Digital Networks
IPInternet Protocol
IrDAInfrared Data Association
ISDNIntegrated Services Digital Network
ISPInternet Service Provider
JPEGJoint Photographic Experts Group
JREJava Runtime Engine
JSPJava Server Pages
KBKilo Bytes
KHzKilo Hertz
LANLocal Area Network
LCDLiquid Crystal Display
LEDLight Emitting Diode
LPMLine Per Minute
LSILarge Scael Integration
MANMetropolitan Area Network
MARMemory Address Register
MBMega Bytes
MBRMemory Buffer Register
MHzMega Hertz
MIDIMusical Instrument Digital Interface
MIPSMillions of Instructions Per Second
MNPMicrocom Network Protocol
MPEGMoving Pictures Experts Group
MS-DOSMicroSoft Disk Operating System
MVTMultiprogramming with Variable Tasks
NICNetwork Interface Card
NICNETNational Informatics Center NETwork
NOSNetwork Operating System
OCROptical Character Recognition
OMROptical Mark Reader
OSOperating System
OSIOpen System Interconnection
OSSOpen Source Software
PANPersonal Area Network
PCPersonal Computer
PDFPortable Document Format
PDLProgram Design Language
PDPProgram Data Processor
PIPPeripheral Interchange Program
PROMProgrammable Read-Only Memory
QoSQuality of Service
RAMRandom Access Memory
ROMRead Only Memory
SDLCSoftware Development Life Cycle
SEQUELStructured English QUEry Language
SGMLSyntax for Generalized Markup Language
SIMMSingle In-line Memory Module
SNASystems Network Architecture
SNOBOLStriNg Oriented and symBOlic Language
SQLStructured Query Language
SSISmall Scale Integration
TBTera Bytes
TCPTransport Control Protocol
TDMTime Division Multiplexing
UDPUser Datagram Protocol
ULSIUltra Large Scale Integration
UPCUniversal Product Code
URLUniform Resource Locator
USBUniversal Serial Bus
UTFUnicode Transformation Format
VANValue Added Network
VCRVideo Cassette Recorder
VDTVideo Display Terminal
VGAVideo Graphics Array
VoIPVoice over Internet Protocol
VSATVery Small Aperture Terminal
WANWide Area Network
WAPWireless Application Protocol
WiMAXWorldwide Interoperability for Microwave Access
WLANWireless Local Area Network
WLLWireless Local Loop
WORMWrite Once Read Many
WWWWorld Wide Web
XHTMLeXtensible HyperText Markup Language
XMLeXtensible Markup Language
X.400Electronic Mail Protocol
X.500Directory Server Protocol

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