computers By 2090223 Apr 27, 1975 IBM 5100 Apr 27, 1977 apple II os wos interger basic rom Apr 27, 1980 IBM 5210 os Apr 27, 1981 apple III os apple sos Apr 27, 1982 commander 64 os rom Apr 27, 1983 apple lisa apple GUI Apr 27, 1985 atari amigo 1000 Apr 27, 1986 IBM PC XT Apr 27, 1989 apple macintosh portable Apr 27, 1991 macintosh powerbook os mac Apr 27, 1991 apple realese system 7 Apr 27, 1992 microsoft realse 3.1 Apr 27, 1992 amigo 4000 os dos 3.1 Apr 27, 1997 mac realse os 8 Apr 27, 2009 microsoft release windows NT
