OPERATING SYSTEMS By AntonioCarretero Period: 1980 to 2021 OPERATING SYSTEMS 1982 DOS 1991 LINUX 1993 UNIX 1995 WINDOWS 95 1998 WINDOWS 98 1999 WINDOWS NT 2000 WINDOWS ME 2001 WINDOWS XP 2001 MAC OS X 2007 WINDOWS VISTA 2009 WINDOWS 7