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ASSEMBLING THE CENTRAL PROCESSING UNIT
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ACIA address bus address lines Altair Bus analog appears in Fig ASCII basic binary buffer buses bytes capacitor character chip circuit clock command components connected control bus control lines control signals converter counter cycle D/A converter data bus debugging decoding detected device DISK DRIVE diskette display dynamic RAM EBCDIC encoded EPROM error example floppy disk Flowchart format functions hardware hexadecimal illustrated in Fig implemented in-circuit emulator input input-output instruction integrated interface interrupt interrupt request keyboard latch load logic memory memory-mapped I/O microcomputer microprocessor microprocessor system module multiplexer operation output P.O. Box port power supply problems processor pulse refresh RESET routine sector serial shown on Fig specified standard status subroutine switch sync synchronous techniques terminals tion track transfer typical UART USART voltage volts write