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NAA bias&o=10616

GM-NAA I/O

The GM-NAA I/O input/output system of General Motors and North American Aviation was the first operating system in the history of computer science.

It was created in 1956 by Bob Patrick of General Motors and Owen Mock of North American Aviation for the IBM 704 computer. It was based on a system monitor created in 1955 by programmers of General Motors for its IBM 701.

The main function of GM-NAA I/O was to automatically execute a new program once the one that was being executed had finished. It was formed of shared routines to the programs that provided common access to the of input/output devices.

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