History of the Personal Computer By zebrahatswag Sep 1, 1975 IBM5100 OS APL/BASIC Period: Sep 1, 1975 to Jul 22, 2009 Personal Computers Jun 1, 1977 Apple II OS Feb 1, 1980 IBM 1520 Jul 1, 1980 Radio Shack TRS-80 May 1, 1981 Apple III Apr 1, 1982 Otrona Attache Jun 1, 1983 Apple Lisa May 1, 1984 HP 110 Nov 1, 1984 Morrow Pivot May 1, 1985 Zenith Z-171 PC Jul 1, 1985 Atari Amiga Mar 8, 1986 IBM PC XT Sep 1, 1989 Apple Macintosh Portable Oct 1, 1991 Apple Macintosh PowerBook Sep 1, 1992 Amiga 4000
