Lordy, lordy, look who's 40! Happy birthday, Unix -- you're looking great for your age. You certainly weren't the first operating system on any platform, but you managed to stride from the minicomputer era into the microcomputer era and the personal computer era, winning fans wherever you went. How many other operating systems can make the same boast?
1969
Unix was brought to life on a spare DEC PDP-7 at AT&T Bell Labs. When AT&T decided to abandon the Multics (Multiplexed Information and Computing Service) operating system on its minicomputers, Ken Thompson and Dennis Ritchie cobbled together an operating system so they could continue to play a space travel game that Thompson had developed. A colleague gave the system a jokey name based on Multics -- UNICS, the Uniplexed Information and Computing Service, which morphed into UNIX or Unix.
Source: Computerworld.com
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