Key people: Ada Lovelace, Alan Turing, Pete Sampson, Nolan Bushnell, Robert Yannes, Rob Hubbard, Matt Smith.
The oscillogram above shows output from a 1982 Sinclair ZX Spectrum's BEEP 8,48 command. This is detail from a photograph taken by Matthew Logue for the cover of the book.
Underlying concepts: interrupt control, music players, noise, overmodulation, polyphony, parametric filters, chord arpeggios, bitstreams, ADSR, CDMA, DAC, MIDI.
Platforms mentioned: Manchester Mark 1, MIT TX-0, Atari VCS, TRS-80, Apple ][, Acorn Atom, Intellivision, Vectrex, ZX Spectrum, ColecoVision, Oric, C64, Memotech, Adam, Sord, Amstrad CPC, MSX, Einstein, Master System, Apple IIGS, SAM, Atari ST, Megadrive/Genesis, Neo Geo.
Components described: GI AY-8910/8912, Intel 8253, TI SN76477 and SN76489, Atari TIA and POKEY, Commodore SID, SAA1099, Ensoniq DOC 5503.
Games noted: Space War, Computer Space, Space Invaders, Centipede, Gauntlet, Missile Command, Firefox, I Robot, Major_Havoc, Return of the Jedi, Meteor Attack, Manic Miner, Commando, International Karate, Fairlight, Zombie Zombie, TOCA Race Driver.