Code: The Hidden Language of Computer Hardware and Software, 2nd Edition

Index

Numbers

0 (zero) and 1 (one)

Boolean algebra, 45

AND gates and, 74–75

importance of, 94–95

as “no” and “yes,” 47, 117–118

8-bit adder, 180–182, 202, 205, 210, 227, 303

6800 microprocessor, 313, 421, 428

8080 microprocessor. see Intel 8080

A

accumulating adders, 227–228, 231–232, 290, 293

accumulators, 335–341, 343, 345–346, 383

adding machines

8-bit edge-triggered, 289–290

ALU as, 319–323

automated, 289–314

logic gate based, 169–182

relay computers as, 183–184

subtraction with, 202–206, 210

addition tables, 97, 104, 111

address bus, 346, 348

Aiken, Howard, 184, 430

algebra, 42–44

ALGOL, 431

algorithms, 94, 439

al-Khwarizmi, Muhammed ibn Musa, 94

Allen, Paul, 432, 433

Altair 8800, 288, 312, 318

Alto, 420–421

ALU (arithmetic logic unit) ...