Processors
minicomputers ============= 1965 DEC PDP-8 ALU used late 1960s through the early 1980s 4bit slice arithmetic logic unit (ALU): 74181 late 60, early 70s minicomputer examples include: NOVA, PDP-11, Xerox Alto, Wang 2200, VAX-11/780 microcomputer ============= 1971 4004 0.7MHz 4bit INTEL/Busicom (build to simplify the special purpose LSI chipset in the Unicom 141*) 1972 8008 0.2MHz 8bit INTEL (SacState[1] Bill Pentz) 1974 6800 1MHz 8bit MOTOROLA (Altair 680, Tektronix 4051, SWTPC 6800) 1974 8080 2MHz 8bit INTEL (Altair 8800) 1975 6502 1MHz 8bit MOS (Atari 2600, Commodore VIC-20, Apple II, Commodore PET) 1976 Z80 2.5MHz 8bit ZILOG (TRS-80,Osborne 1, Xerox 820) 1977 6875 2MHz 8bit MOTOROLA 1978 8086 5MHz 16bit INTEL (IBM PS/2 models 25, Tandy 1000 SL&RL-series, Mycron 2000) 1979 8088 5MHz 16bit INTEL
[1]SacState: http://www.digibarn.com/stories/bill-pentz-story/index.html