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.
The SHARE Operating System provided new methods to manage
buffers and
input/output
In computing, input/output (I/O, or informally io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system. Inputs are the signals ...
devices. Like GM-NAA I/O, it allowed execution of programs written in
assembly language.
SOS initially ran on the
IBM 709
The IBM 709 was a computer system, initially announced by IBM in January 1957 and first installed during August 1958. The 709 was an improved version of its predecessor, the IBM 704, and was the third of the IBM 700/7000 series of scientific ...
computer and was then ported to its transistorized successor, the
IBM 7090
The IBM 7090 is a second-generation transistorized version of the earlier IBM 709 vacuum tube mainframe computer that was designed for "large-scale scientific and technological applications". The 7090 is the fourth member of the IBM 700/7000 s ...
.
A series of articles describing innovations in the system
appears in the April 1959 ''
Journal of the Association for Computing Machinery
The ''Journal of the ACM'' is a peer-reviewed scientific journal covering computer science in general, especially theoretical aspects. It is an official journal of the Association for Computing Machinery. Its current editor-in-chief is Venkatesan ...
.''
In 1962,
IBM discontinued support for SOS and announced an entirely new (and incompatible) operating system,
IBM 7090/94 IBSYS.
See also
*
Multiple Console Time Sharing System
*
Timeline of operating systems
This article presents a timeline of events in the history of computer operating systems from 1951 to the current day. For a narrative explaining the overall developments, see the History of operating systems.
1950s
* 1951
** LEO I 'Lyons Elect ...
*
SQUOZE
References
Further reading
* (5 pages)
* (7 pages)
* (4 pages) (NB. This was presented at the ACM meeting 11-13 June 1958.)
*
https://archive.org/download/bitsavers_ibmshareSO61_18030152/SOS_Reference_Manual_Jun61.pdf]
External links
Upload of the SHARE Operating System software and documentation (partial archive)
1959 software
Free software operating systems
IBM operating systems
Discontinued operating systems
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