The SHARE Operating System (SOS) is an operating system introduced in 1959 by the SHARE user group. It is an improvement on the General Motors GM-NAA I/O operating system, the first operating system for the IBM 704. The main objective was to improve the sharing of programs.
Developer | SHARE user group |
---|---|
Working state | Discontinued |
Initial release | 1959 |
Available in | English |
Platforms | IBM 709, IBM 7090 |
Preceded by | GM-NAA I/O |
Succeeded by | IBM 7090/94 IBSYS |
The SHARE Operating System provided new methods to manage buffers and input/output devices. Like GM-NAA I/O, it allowed execution of programs written in assembly language.
SOS initially ran on the IBM 709 computer and was then ported to its transistorized successor, the IBM 7090.
A series of articles describing innovations in the system[1] appears in the April 1959 Journal of the Association for Computing Machinery.
In 1962, IBM discontinued support for SOS and announced an entirely new (and incompatible) operating system, IBM 7090/94 IBSYS.