H

Hahn, Mathieus, 3738
Haibt, Lois, 215
Halen, Richard, 193
Hamilton, Francis E., 104
Hammer, Franz, 15, 20
Harmonic analyzer, 84, 86
Hart, Joseph K., 284
Harvard Mark I.  See Mark I (Harvard)
Hastings, S. M., 175
H-bomb

ENIAC and, 13031
simulations of (see EDVAC)

Heathkit, 275
Henschel Aircraft Company, 92, 95
Herrick, Harlan, 21314
Herschel, John, 40, 4546
Hewlett-Packard Company, 241, 267, 277, 279
Hilbert, David, 14344
Hindu-Arabic numbers, 46
Hobbyists, personal computers and electronic, 26876
Hoerni, Jean, 239242, 259
Hoff, Marcian E., 26265
Hollerith, Herman, 17576

background of, 70, 72
patents and, 69
tabulating system of (see Hollerith’s tabulating system)

Hollerith’s tabulating system, 7274

Census use of, 7678
punch cards in, 7374
use of electricity in, 74

Holman, Smith, 193
Homebrew Computer Club, 27879
Home computer. See Personal computer
Honeywell-Sperry patent case, 220, 222
Hopper, Grace Murray, 214
Hunt, William C., 75
Hurd, Cuthbert C., 19193, 209, 215
Hydraulics, basic principle of, 23