_R.U.R._, 199 radar, 183 railroad line, 6, 119 rapid approximation, 106-8, 220-1 rate of change, 68, 70-1 ratio, 77, 83 Raytheon Computer, 250 reading, 57 reading brushes, 51-2 reading channel, 50 reading of punch cards, 44 reasoning, 144 rebus-writing, 13 reciprocal, 85, 224 recognizing, 8, 182-5 recorder, 132, 137 rectifier, 32 referent, 12 register, 27 reject, 49 relay, 17, 20-1, 23, 92, 129, 133, 178; Common, 21; Ground, 21; Normally Closed, 21; Normally Open, 21; Pickup, 21 release key, 48 reliability, 63-4, 110, 126, 128, 141-2, 166, 168, 174 Remington-Rand, 43 reperforator, 137 rephrasing, 163-4 reproducer, 47, 49-50, 235 reproducing, 49 reset code, 100 resetting, 100 resistance, 80, 117 resistance coefficient, 80 resistor, 117 right-hand components, 56, 121, 215 robot machine, 197, 198-208, 255 robot salesman, 201 _robota_ (Czech), 199 Roman numerals, 212; ancient style, 219 room, 70 Rossum’s Universal Robots, 199 rounding off, 55-6 routine, 8, 167, 173 routine frames, 138-9 routine tape, 28, 134 rules, 191, 224 satisfy, 225 scale factor, 74, 86 schemes for expressing meanings, 11-15 screen, 172 screw, 78 Secondary (input of sequencer), 61-2 Secondary Brushes, 51, 62 Secondary Feed, 61 Select-Receiving-Register circuit, 39 selecting, 26, 58, 104 selection, 26-7, 38, 222 selection circuit, 38 selection counter, 104 selector, 58-60 sensing digits, 108 separation sign, 129 sequence-control tape, 98 sequence-control-tape code, 98 sequence-controlled, 89 sequence-tape feed, 98 sequencer, 61 sequencing, 61 shifting, 217 short-cut multiplication, 215-6 Simon, 22-40 simultaneous, 225 simultaneous equations, 85, 225 sine, 75, 85, 106, 139, 226 sink (of a circuit), 154 slab, 18 slide rule, 65, 67 smoothness, 110, 227 social control, types, 203 sorter, 47-9 sorting, 57, 173 soundtracks, 16, 18 source (of a circuit), 154 space key, 48 speedometer, 68 spelling rules, 185 spoken English, 11 square, 224 square matrix, 227 square root, 116-7, 173, 220, 224 Start Key, 98 statements, 26, 144-51 static electricity, 63 storage, 6 storage counter, 93 storage devices, 252 storage register, 28, 93 storing information, 15 storing register frames, 138 storing registers, 139 string, 65-6 stylus, 16 subroutine, 106 Subsidiary Sequence Mechanism, 90, 106 subtract output, 120 subtracting, 55, 100, 119, 139, 223 subtracting by adding, 223 summary punch, 50, 116, 119 summary-punching, 50 switch open and current flowing, 154 switchboard, 76 switches in parallel, 154 switches in series, 154