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The GM-NAA I/O input/output system of General Motors and North American Aviation was the first operating system for the IBM 704 computer.

It was created in 1956 by Robert L. Patrick of General Motors Research and Owen Mock of North American Aviation. 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 (batch processing). It was formed of shared routines to the programs that provided common access to the input/output devices. Some version of the system was used in about forty 704 installations.

See also

• SHARE Operating System, an operating system based on GM-NAA I/O.
• Multiple Console Time Sharing System
• Timeline of operating systems
• Resident monitor

References

1. ^ "Timeline of Computer History: 1956". Computer History Museum. Software & Languages. Archived from the original on 2007-09-04. Retrieved 2007-09-04.
2. Ryckman, George F. (April–June 1983). "17. The IBM 701 Computer at the General Motors Research Laboratories". Annals of the History of Computing. 5 (2). IEEE: 210–212. doi:10.1109/MAHC.1983.10026.

External links

• Operating Systems at Conception by Robert L. Patrick
• The World’s First Computer Operating System in millosh's blog talks about the General Motors OS and GM-NAA I/O

Also the developers helped UNIX devs to make the UNIX operating-system

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