Part 47

Darwin, Charles, 32, 137, 252

Data link, 14, 185, 256 logger, 205 processing, 22, 171, 264 recording media, 57

Daystrom, Inc., 211

Dead Sea Scrolls, 235

Decimal system, 19

Decision-making, 91

Defense, use of computer, 259

Delay-line circuit, 63

DeMorgan, Augustus, 38, 110, 115

Department of Commerce, U. S., 149, 221

Department of Defense, U. S., 148, 234

Design, use of computer, 14, 172, 186, 268

Desk calculator, 51

Diagnostic use of computer, 194

Diamond Ordnance Fuze Laboratory, U. S. Army, 69

Dictionary, computer, 49, 50

DIDAK teaching machine, 224

Difference engine, 5, 35

Digiflex trainer, 225

Digital computer, 18, 45, 73, 84, 125, 203

Digital differential analyzer, 94

Digitronics, 236

Discrete quantity, 73

Disjunctive operation, 110

Division, computer, 107

Dodgson, Charles L., 38

Do-it-yourself computer, 75, 88, 117, 147

Douglas Aircraft Co., 65