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Possibly the best-known 12-bit CPU is the PDP-8 and its relatives, such as Intersil 6100 microprocessor produced in various incarnations from August 1963 to mid-1990. Many analog to digital converters (ADCs) have a 12-bit resolution. Some PIC microcontrollers use a 12-bit word size. 12 binary digits, or 3 nibbles (a 'tribble'), have 4096 (10000 octal, 1000 hexadecimal) distinct combinations. Hence, a microprocessor with 12-bit memory addresses can directly access 4096 words (4 Kw) of word-addressable memory. At a time when six-bit character codes were common a 12-bit word, which could hold two characters, was a convenient size. ==List of 12-bit computer systems== * Digital Equipment Corporation * * PDP-5 * * PDP-8 * * PDP-12 * * PDP-14 * * DECmate, a personal computer based on the Intersil 6100 * Control Data Corporation * * CDC 6600 - Peripheral Processor (PP) * * CDC 160 series computers * Scientific Data Systems SDS 92 * Ford Motor Company EEC I Automotive engine control unit * PC12 minicomputer * Ferranti Argus * LINC, later commercialized by DEC as the LINC-8 * Intersil IM6100 microprocessor 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「12-bit」の詳細全文を読む スポンサード リンク
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