The SHARE Operating System (SOS) is an
operating system
An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs.
Time-sharing operating systems scheduler (computing), schedule tasks for ...
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, i/o, or informally io or IO) is the communication between an information processing system, such as a computer, and the outside world, such as another computer system, peripherals, or a human operator. Inputs a ...
devices. Like GM-NAA I/O, it allowed execution of programs written in
assembly language
In computing, assembly language (alternatively assembler language or symbolic machine code), often referred to simply as assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence bet ...
.
SOS initially ran on the
IBM 709
The IBM 709 is a computer system that was 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 compute ...
computer and was then ported to its transistorized successor, the
IBM 7090
The IBM 7090 is a second-generation Transistor computer, 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 o ...
.
A series of articles describing innovations in the system
appears in the April 1959 ''
Journal of the Association for Computing Machinery.''
In 1962,
IBM
International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American Multinational corporation, multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is ...
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
*
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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