Abacus
Android (robot)
Algorithm
MessagePad
Ada Lovelace
Alan Turing
Ada (programming language)
Analytical engine
Apple I
Atanasoff–Berry computer
Assembly language
AOL
Alan Kay
APL (programming language)
ALGOL
AWK
Kolmogorov complexity
Amiga
Avionics
Acorn Electron
Andrew Tridgell
IBM AIX
Apple III
AVL tree
Aster CT-80
Atari ST
Amstrad CPC
Apple II
Amdahl's law
Accelerated Graphics Port
AMD
Analog computer
Autocorrelation
Parallel ATA
Atari 2600
Atari 5200
Atari 7800
Atari Jaguar
Atari Lynx
AIM (software)
Arcadia 2001
Adrian Lamo
Alexey Pajitnov
Athlon
Amiga 500
Andrew S. Tanenbaum
Accumulator (computing)
AGM-88 HARM
Acceptance testing
Bulletin board system
Bell Labs
Bjarne Stroustrup
Bluetooth
Bluetooth Special Interest Group
Bill Gates
Boolean algebra (structure)
Brian Kernighan
BQP
Barter
Binary search algorithm
Backplane
Buffer overflow
Backward compatibility
BIOS
Bash (Unix shell)
Bugzilla
Booch method
BeOS
BeBox
Central processing unit
Computer data storage
Computer program
Chomsky hierarchy
Cathode-ray tube
Common Lisp
Colossus computer
Timeline of computing
Client–server model
Camel case
Context-free grammar
Computer memory
Cache (computing)
Computer multitasking
Cyrix 6x86
Computer mouse
Commodore 64
ColecoVision
Coleco Telstar series
Fairchild Channel F
Checksum
Commodore International
Calculator
Computer monitor
Compaq
Data Encryption Standard
Douglas Engelbart
Douglas Adams
Donald Knuth
Dennis Ritchie
Debian