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Trouble Symptom Analysis
Breaking the Factory Seal
The Chip Location Guide
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able accumulator activity address bus address lines analog applied attached binary bits block buffers byte called cassette cause Chapter character chip circuits clear clock color columns components connected contains contents count data bus decimal decoder devices diodes display edge eight enable enters flip-flop four frequency gate goes ground held home computer indicates input installed instruction internal joystick keyboard lead lines logic look means memory mode NAND needed nybble Once operation output phase pins possible printer probe produce program counter pulse receive repair reset result rows running screen sends short shows side signal sound stored supply switch Table tion transistor trouble turn typical usually video RAM voltage wired write