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===The [[8-bit computing|8-bit]] processors=== [[File:Intel D8008.jpg|thumb|Intel D8008]] ====[[8008]]==== * Introduced April 1, 1972 * Clock rate 500 kHz (8008-1: 800 kHz) * 0.05 MIPS * Bus width: 8 bits (multiplexed address/data due to limited pins) * Enhancement load [[PMOS logic]] * 3,500 transistors at 10 μm * Addressable memory 16 KB * Typical in early 8-bit microcomputers, dumb terminals, general calculators, bottling machines * Developed in tandem with 4004 * Originally intended for use in the [[Datapoint 2200]] microcomputer * Key volume deployment in Texas Instruments 742 microcomputer in >3,000 Ford dealerships [[File:Intel D8080.jpg|thumb|Intel D8080]] ====[[8080]]==== * Introduced April 1, 1974 * Clock rate 2 MHz (very rare 8080B: 3 MHz) * 0.29 MIPS<ref>{{Cite web |url=http://www.depi.itch.edu.mx/apacheco/asm/Intel_cpus.htm |title=Intel Processors |access-date=2013-01-28 |archive-url=https://web.archive.org/web/20120424231244/http://www.depi.itch.edu.mx/apacheco/asm/Intel_cpus.htm |archive-date=2012-04-24 |url-status=dead}}</ref> * Data bus width: 8 bits, address bus: 16 bits * Enhancement load [[NMOS logic]] * 4,500 transistors at 6 μm * [[Assembly language]] downward compatible with 8008 * Addressable memory 64 KB (64 × 1024 B) * Up to 10× the performance of the 8008 * Used in e.g. the [[Altair 8800]], [[traffic light]] controller, [[cruise missile]] * Required six support chips versus 20 for the 8008 [[File:Intel D8085A.jpg|thumb|Intel D8085A]] [[File:Intel P8085.jpg|thumb|Intel P8085 (plastic variant)]] ====[[8085]]==== * Introduced March 1976 * Clock rate 3 MHz<ref name="intel1"/> * 0.37 [[instructions per second|MIPS]] * Data bus width: 8 bits, address bus: 16 bits * Depletion load [[NMOS logic]] * 6,500 transistors at [[3 μm process|3 μm]] * [[Binary compatible]] downward with the 8080 * Used in [[Mettler Toledo|Toledo scales]]. Also used as a computer peripheral controller – modems, hard disks, printers, etc. * [[CMOS]] 80C85 in [[Mars Sojourner]], [[TRS-80 Model 100 line|Radio Shack Model 100 portable]]
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