sistemas operativos By katii Apr 1, 1945 sistema operativo Sep 17, 1950 tarjetas perforadas tarjetas perforadas Jul 1, 1960 circuito integrado Sep 17, 1960 tiempo compartido Sep 17, 1969 unix Apr 4, 1975 microsoft Sep 17, 1980 MS-DOS Sep 17, 1980 MS-DOS Sep 27, 1983 GNU Sep 27, 1983 GNU Sep 17, 1991 LINUX