IAS. See Institute for Advanced Study
IAS computer, 154–55, 195, 208, 254
card-programmed calculators, 190–91
compatible computers and, 248
Defense Calculator (IBM 701) and, 192–93
early competitors of, 182–83
factories of, 182, 192
first logo of, 183
first program-controlled calculators and, 103–4, 106–7
Great Depression and, 183–84
lead in computer business by, 218–20
Mark I (Harvard) and, 187–88
100 Percent Club of, 179–80
predecessors to, 78, 173–81 (see also Computing Tabulating-Recording Company)
programming effort of, 211
size and markets of, 167
specific computers: PC, 280–81; 360, 248–50; System/360, 248–50; System/370, 250; 603, 190; 604, 190; 650, 209–10; 700 Series, 218; 701 (Defense Calculator), 192–93, 195, 210, 215; 702, 210; 704, 210, 214–16; 705, 210
SSEC and, 188–89
tape-processing machine, 190
WWII and, 184
See also Watson, Thomas J., Jr.; Thomas J., Sr.
IC. See Integrated circuits
IF strip (intermediate-frequency amplifier), 235–36
ILLIAC (Illinois Automatic Computer), 154
IMSAI, 275–76
Indexing, in programming, 213
Institute for Advanced Study (IAS), 136, 138, 153–54. See also IAS computer
Integrated circuits, 206–248. See also Microprocessor
commercial development of, 244–45
computer, 238, 245, 248, 250–51
construction of, 236–39, 246
diagrams of, 242–43
drawings of, 236
early, 224
first bona fide, 233
first idea of, 230–31
logic, 263
silicon transistors and, 241–44
Intel Corporation, 279–80
founding of, 259, 61
microprocessor and, 264–65
4004 microprocessor, 262–65
8008 microprocessor, 265, 269–70, 270
8080, 265, 270, 272
International Business Machines Corporation. See IBM
International Time Recording Company, 174–77
Intersil, 259