Unix was created in 1969 by Ken Thompson and Dennis Ritchie at Bell Laboratories. Unix, as we know it today, actually began as an exercise to port a game called "Space Travel" onto a PDP-7 computer. The lack of required functionality required the authors to create floating-point arithmetic routines, an assembler, and even a file system. The "Space Travel" effort therefore evolved into the creation of a self-sustaining operating system with a local file system, on a computer that could previously only load software from a paper tape.
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