Abacus, 3–6
ABC. See Atanasoff-Berry Computer
Aberdeen Proving Ground, 108–9
Accumulator, ENIAC’s, 123, 128, 130
ACE. See Automatic Computing Engine
A. C. Neilsen Company, 161
Adcock, Willis, 235–6
Advanced Micro Devices, 259
Ahl, David, 266-8
Aiken, Howard H., 103–104, 106–7, 137, 139
computers and skepticism of, 155–6
IBM and, 187–8
Air defense system, computerized, 202–9
Air traffic control. See Whirlwind computer
Algebra, Boolean. See Boolean algebra
ALGOL, 217
Allen, Paul, 275
Altair 8800 personal computer, 270–76
Amelco. See Teledyne Semiconductor
American Airlines, 208
American Cash Register Company, 172
American Research and Development Corporation (ARD), 257
American Totalister Company (AmTote), 161–2
Analog calculators, early, 15, 85–6
Analog devices, 84, 88
Analytical Engine, 51, 58–9, 61, 63–66, 134
computer or calculator as, 64–66
decision making and, 63–65
design and operation of, 52, 55, 60–1, 63
mill of, 60–2
programming of, 61–63
punch cards and, 63–4
store of, 60
Analyzer. See Differential analyzer; Harmonic analyzer
Anderson, Harlan E., 257
Antikythera mechanism, 14–5
Apple Computer Company
Apple II, 280
beginning of, 279–80
computers, 252, 278–80
first logo of, 281
Arithmometer, invention and use of, 37–9, 57, 78
Army Ordnance Department, 108–10, 133, 141, 151
Assembly languages, 211
IBM 701 and, 215
Mark I (Harvard) and, 212
Atanasoff, John V., 115, 253
Atanasoff-Berry Computer and, 116–8
background of, 114–5
digital electronic calculator and, 113–20
ENIAC patent lawsuits and, 220, 222–3
John Mauchly and, 113–4, 116, 119–20
Atanasoff-Berry Computer (ABC), 116–9
Atari, 277–9
Auerbach, Albert, 157
Automatic Computing Engine (ACE), 147–8
Automatic Sequence-Controlled Calculator (ASCC). See Mark I (Harvard)