- 1969
- UNIX starts at Bell Labs in the USA.
- 1975
- UNIX Version 6 is the first to be widely available
- 1976
- The Apple I is shown at the Homebrew Computer Club in Palo Alto, California.
- 1979
- Apple II+ with improved OS is sold for $1,195.
- 1981
- IBM starts work on a PC using Microsoft's MS-DOS
- 1982
- The GNU Project, started by Richard Stallman, lays the foundation for open source software including Linux.
- 1983
- Microsoft Windows is announced in November and sells for $100.00.
- 1984
- There are now more than 100,000 unix computers around the world.
- 1986
- Arabic Macintosh operating system introduced.
- 1987
- The first multitasking operating system for Macintosh
- 1989
- UNIX is now on 1.2 million computers.
- 1990
- Microsoft Windows 3.0 released on May, 22 priced at $149.95
- 1991
- Linux version 0.01 is released in September
- 1992
- 4 million customers use Apple's System 7 OS
Microsoft Windows 3.1 is released in April and sells more than 1 Million copies within the first two months
MS announces Windows NT, the basis of windows 2000 and win XP
- 1993
- The final release of Unix from Berkeley
Slackware becomes the first commercial distribution of Linux in June.
The number of licensed users of Microsoft Windows now totals more then 25 Million.
- 1994
- Macintosh System 7.5 operating system is launched.
- 1995
- Microsoft Windows 95 is released in August and sells more than 1 Million copies within 4 days.
- 1996
- The penguin Tux becomes the Linux mascot
- 1997
- There are now many different versions of Unix and companies are fighting in court about who owns what
The Linux trademark is given to Linus Torvalds on behalf of all Linux users.
- 1998
- Microsoft Windows 98 is released in June.
The (Linux-based) Google search engine starts in May.
- 2000
- Microsoft Windows 2000 is released in February
A report suggests that Linux is the `second-most-popular operating system for server computers' with 25% of sales
Microsoft Windows ME (Millennium) is released on June 19, 2000.
- 2001 -
- A new century begins with tablet computing, android operating systems for smartphones and 'wearable tech' such as Google Glass -the story continues ....
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