The first operating system was developed in the 1950s.
Mac OS is the first operating system developed in the year 1955
Apples first operating system was Apple DOS 3.1 for the Apple II in 1978. Versions 1 and 2 were internal testing versions and were not made available to the public. They developed Apple SOS (Sophisticated Operating System) for the Apple III in 1980. Parts of the SOS were used in the Lisa's operating system which in turn would lead to the Macintosh Operating System. The first operating system for the Macintosh came out in 1984, with the release of the first Macintosh. This was known as "System 1.0". The current series of system software, Mac OS X, was released in 1999 for servers, and 2001 for desktops.
1983
Microsoft's first operating system named Windows was introduced on November 20, 1985. The Microsoft Windows operating system is now available in 137 languages.
1975
The Unix operating system Sun Solaris originally developed by Sun Microsystems which is now known has been owned by Oracle corporation since January 2010. Solaris was initially released in June 1992.
CPR was developed in 1960.
1991
2020
1979
1991