A to Z Computer Science Abbreviations

Written by Ilmgaah

Most Important and Commonly used A to Z Computer Science Abbreviations

In this article, you are going to learn 300+ very common and very important Computer Science/IT abbreviations. These MCQs are very important for the preparation of exams as well as job tests. This list is arranged from A to Z and includes computer-related abbreviations from Basic to advance levels. This important article can also be downloaded in PDF format from the d0wnload link at the end of this article.

ADSL: Asymmetric Digital Subscriber Line CAI: Computer-Aided Instruction
ADT: Abstract Data Type CAM: Computer-Aided Manufacturing
AGP: Accelerated Graphics Port CASE: Computer-Aided Software Engineering
AI: Artificial Intelligence CCNA: Cisco Certified Network Associate
ALU: Arithmetic Logic Unit CD: Compact Disc
AM: Amplitude Modulation CD-ROM: Compact Disc Read-Only Memory
AMD: Advanced Micro Devices CD-RW: Compact Disc Rewritable
AMOLED: Active-Matrix Organic Light-Emitting Diode CLI: Command Line Interface
ANSI: American National Standards Institute CMOS: Complementary Metal-Oxide Semiconductor
API: Application Programming Interface CMS: Content Management System
ARP: Address Resolution Protocol COBOL: Common Business-Oriented Language
ARPANET: Advanced Research Projects Agency Network CPU: Central Processing Unit
ASCII: American Standard Code for Information Interchange CRL: Common Language Runtime
ATA: Advanced Technology Attachment CRT: Cathode Ray Tube
ATM: Asynchronous Transfer Mode CS: Computer Science
B2B: Business to Business CSMA/CD—Carrier sense multiple access with collision detection
B2C: Business to Consumer CSS: Cascading Style Sheets
BASIC: Beginner’s All-Purpose Symbolic Instruction Code CU: Control Unit
BCD: Binary Coded Decimal DA: Data Administrator
BIOS: Basic Input Output System DAT: Digital Audio Tape
BT: Bluetooth DB: Database
C2C: Consumer to Consumer DBA: Database Administrator
CAD: Computer-Aided Design DBMS: Database Management System
CAE: Computer-Aided Engineering DDL: Data Definition Language

DDL: Dynamic Link Library EDGE: Enhanced Data rates for GSM Evolution
DDR: Double Data Rate EDI: Electronic Data Interchange
DEC: Digital Equipment Corporation EDVAC: Electronic Discrete Variable Automatic Computer
DFD: Data Flow Diagram EEPROM: Electronically Erasable Programmable Read-Only Memory
DHCP: Dynamic Host Configuration Protoco EFI: Extensible Firmware Interface
DIMM: Dual Inline Memory Module Email: Electronic Mail
DLL: Dynamic Link Library ENIAC: Electronic Numerical Integrator And Computer
DMA: Direct Memory Access EPROM: Erasable Programmable Read-Only Memory
DML: Data Manipulation Language ERD: Entity-Relationship Diagram
DNS: Domain Name System ERM: Entity-Relationship Model
DOS: Disk Operating System ERP: Enterprise Resource Planning
DP: Display Port eSATA: External Serial Advanced Technology Attachment
DP: Dot Pitch FAT: File Allocation Table
DPI: Dots Per Inch FDDI: Fiber Distributed Data Interface
DRAM: Dynamic Random-Access Memory FDM: Frequency Division Multiplexing
DSL: Digital Subscriber Line FPS: Frames Per Second
DVD: Digital Versatile Disc FIFO: First In First Out
DVD-R: DVD-Recordable FM: Frequency Modulation
DVD-ROM: DVD-Read Only Memory FORTAN: Formula Translation
DVD-RW: DVD-Rewritable FDM: Frequency-Division Multiplexing
DVI: Digital Visual Interface FTP: File Transfer Protocol
DVR: Digital Video Recorder GB: Gigabyte
EBCDIC: Extended Binary Coded Decimal Interchange Code GHz: Gigahertz
Ecommerce: Electronic Commerce

GIF: Graphics Interchange Format IC: Integrated Circuit
GIGO: Garbage in, Garbage Out ICMP: Internet Control Message Protocol
GIS: Geographic Information System ICT: Information and Communication Technology
GPS: Global Positioning System IDE: Integrated Development Environment
GMT: Greenwich Mean Time IE: Internet Explorer
GPL: General Public License IEEE: Institute of Electrical and Electronics Engineers
GPRS: General Packet Radio Service IGMP: Internet Group Management Protocol
GPU: Graphics Processing Unit IIS: Internet Information Services
GSM: Global System for Mobile IM: Instant Messaging
GUI:Graphical User Interface INTEL: Integrated Electronics
HCI:Human Computer Interaction IoT: Internet of Things
HD:High Definition IP: Internet Protocol
HDD:Hard Disk Drive IPsec: Internet Protocol security
HDL: Hardware Description Language IPv4: Internet Protocol version 4
HDMI: High-Definition Multimedia Interface IPv6: Internet Protocol version 6
HP: Hewlett-Packard ISDN: Integrated Services Digital Network
HTC: High-Throughput Computing IPS: Instructions Per Second
HTML: Hypertext Markup Language IS-IS: Intermediate System to Intermediate System
HTTP: Hypertext Transfer Protocol ISO: International Organization for Standardization
HTTPs: Hypertext Transfer Protocol Secure ISP: Internet Service Provider
Hz:Hertz JDK: Java development Kit
I/O: Input/output JPEG: Joint Photographic Experts Group
IaaS: Infrastructure as a Service
IBM: International Business Machines

JRE: Java Runtime Environment MHz: Mega Hertz
JS: JavaScript MIDI: Musical Instrument Digital Interface
JSON: JavaScript Object Notation MIMD: Multiple Instruction, Multiple Data
KB: Kilobyte ML: Machine Learning
Kb: Kilobit MMS: Multimedia Messaging Service
KBPS: Kilobit Per Second MPEG: Motion Pictures Experts Group
KHz: Kilo Hertz MSB: Most significant Bit
LAN: Local Area Network MSDN: Microsoft Developer Network
LCD: Liquid Crystal Display NASM: Netwide Assembler
LED: Light-Emitting Diode NAT: Network Address Translation
LIFO: Last In First Out NetBIOS: Network Basic Input/output System
LISP: List Processing NIC: Network Interface Controller
LLC: Logical Link Control NRU: Not Recently Used
LoC: Lines of Code NT: New Technology
LRU: Least Recently Used NTFS: New Technology Filesystem
LSB: Least Significant Bit OCR: Optical Character Recognition
LSI: Large-Scale Integration OMR: Optical Mark Recognition
LTE: Long Term Evolution OS: Operating System
MAC: Media Access Control OSI: Open System Interconnection
MAN: Metropolitan Area Network PaaS: Platform as a Service
MAR: Memory Address Register PAN: Personal Area Network
MB:Megabyte PC: Personal Computer
Mb: Megabit PCB: Process Control Block
MBR: Master Boot Record PCI: Peripheral Component Interconnect

PDA: Personal Digital Assistant SCSI: Small Computer System Interface
PDF: Portable Document Format SD: Secure Digital
PERL: Practical Extraction and Reporting Language SDLC: Software development life cycle
PNG: Portable Network Graphics SEO: Search Engine Optimization
PnP: Plug-and-Play SIM: Subscriber Identification Module
POP: Post Office Protocol SIMD: Single Instruction, Multiple Data
POS: Point of Sale SIMM: Single Inline Memory Module
POST: Power-On Self-Test SMS: Short Message Service
PPI: Pixel per inch SMTP: Simple Mail Transfer Protocol
PROM: Programmable Read Only Memory SQA: Software quality Assurance
PS/2: Personal System/2 SQL: Structured Query Language
QA: Quality Assurance SRAM: Static Random-Access Memory
RAD: Rapid Application Development SSD: Solid State Drive
RAID: Redundant Array of Independent Disks SSH: Secure Shell
RAM: Random Access Memory SSI: Small Scale Integration
RDBMS: Relational Database Management System SSID: Service Set Identifier
RDMA: Remote direct memory access STP: Spanning Tree Protocol
RFC: Request For Comments SVGA: Super Video Graphics Array
RFID: Radio Frequency Identification TASM: Turbo Assembler
RISC: Reduced Instruction Set Computer TB: Terabyte
RGB: Red, Green, Blue TCP: Transmission Control Protocol
ROM: Read Only Memory TDM: Time division Multiplexing
SaaS: Software as a Servcie TFTP: Trivial File Transfer Protocol
SATA: Serial Advanced Technology Attachment TTL: Time to live

UDP: User Datagram protocol WMA: Windows Media Audio
UI: User Interface WPF: Windows Presentation Foundation
ULSI: Ultra large-scale integration WORM: Write once, Read many
UNIVAC: Universal Automatic Computer WPA: Wi-Fi Protected Access
UPS: Uninterruptible Power Supply WWW: Word wide web
URL: Uniform Resource Locator XML: eXtensible Markup Language
USB: Universal Serial Bus XP: Extreme Programming
UTC: Coordinated Universal Time
UTP: Unshielded Twisted Pair
VB: Visual Basic
VDT: Visual Display Terminal
VDU: Visual Display Unit
VGA: Video Graphics Array
VIRUS:  Vital information Recourse Under Siege
VLAN: Virtual Local Area Network
VoIP: Voice over Internet Protocol
VPN: Virtual Private Network
VR: Virtual Reality
W3C: World Wide Web Consortium
WAN: Wide Area Network
WAP: Wireless Access Point
Wi-Fi: Wireless Fidelity
WiMax: Worldwide Interoperability for Microwave Access
WMV: Windows Media Video


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