Computer Words: Short Forms (Acronyms) and Long Forms

Updated on August 5, 2015
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Here are some vocabulary words used in the computing field, with their short forms (acronyms) and long forms. Also, below, are some units used in talking about computing.

Computer Words

(click column header to sort results)
Short Form (Acronym)  
Long Form  
ASCII
American Standard Code for Information Interchange
BIOS
Basic Input/Output System
CAD
Computer-Assisted Design, or Computer-Aided Drafting
CD
Compact Disk
CPU
Central Processing Unit
DVD
Digital Versatile Disk
DVI
Digital Visual Interface
EBCDIC
Extended Binary Coded Decimal Interchange Code
EEPROM
Electrically Erasable Programmable Read-Only Memory
EPROM
Erasable Programmable Read-Only Memory
FDD
Floppy Disk Drive
GUI
Graphical User Interface
HDD
Hard Disk Drive
HDMI
High-Definition Multimedia Interface
HLL
High-Level Language
HTML
Hypertext Markup Language
HTTP
Hypertext Transfer Protocol
I/O
Input/Output
IP
Internet Protocol
IPS
In-Plane Switching (or Instructions Per Second)
ISP
Internet Service Provider
LAN
Local Area Network
LCD
Liquid-Crystal Display
LED
Light-Emitting Diode
LLL
Low-Level Language
MAN
Metropolitan Area Network
MIPS
Millions of Instructions Per Second
NTP
Network Time Protocol
POST
Power-On Self-Test
PROM
Programmable Read-Only Memory
PSU
Power Supply Unit
RAID
Redundant Array of Independent Disks (or Redundant Array of Inexpensive Disks)
RAM
Random Access Memory
ROM
Read-Only Memory
SMPS
Switched-Mode Power Supply
SMS
Short Message Service
SMTP
Simple Mail Transfer Protocol
SSD
Solid State Drive
TCP/IP
Transmission Control Protocol/Internet Protocol
TN
Twisted Nematic
URL
Uniform Resource Locator
USB
Universal Serial Bus
VDU
Visual Display Unit
VGA
Video Graphics Array
WAN
Wide Area Network
WWW
World Wide Web

Computer Units

 
 
 
4 bits
= 1 nibble
 
8 bits
= 1 byte
 
1 kilobit per second (kbps)
= 125 bytes per second (Bps)
 
1 Megabit per second (Mbps)
= 0.125 megabytes per second (MBps)
 
1024 bytes
= 1 kilobyte (KB)*
 
1024 kB
= 1 megabyte (MB)*
 
1024 MB
= 1 gigabyte (GB)*
 
1024 GB
= 1 terabyte (TB)*
 
1024 TB
= 1 petabyte (PB)*
 
1024 PB
= 1 exabyte (EB)*
 
1024 EB
= 1 zettabyte (ZB)*
 
1024 ZB
= 1 yottabyte (YB)*
 
*In binary computer nomenclature these prefixes are used for powers of 1024, not powers of 1000.

"Computer," Short Form and Long Form

 
 
 
COMPUTER
Commonly Operated Machine Particularly Used in Technical and Educational Research
 
COMPUTER
Completely Obedient Machine Provided User Types Everything Right
 

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