Developer | Bell Labs |
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Written in | IBM's FORTRAN and North American's Symbolic Assembly Program (SAP) |
Working state | Discontinued |
Initial release | 1957 |
Latest release | BE90 / 1968 |
Platforms | IBM 704 |
History of IBM mainframe operating systems |
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BESYS (Bell Operating System) was an early computing environment originally implemented as a batch processing operating system in 1957 at Bell Labs for the IBM 704 computer.
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