historia de los sistemas operativos By facebooker_100001420797849 Feb 21, 1958 ATLAS ATLLAS Feb 21, 1962 CTSS CTSS Feb 21, 1965 XDS-940 XDS-940 Feb 21, 1966 MULTICS/OS360 Feb 21, 1968 THE Feb 21, 1969 UNIX Feb 21, 1970 RC4000 Feb 21, 1974 MVS