MOS (operating system)
Encyclopedia
MOS signifies 'Mobile Operating System' . It was a Soviet
clone
of Unix
in the 1980s. This operating system
was commonly found on SM EVM
minicomputer
s; it was also ported to ES EVM
and Elbrus
. MOS was also used in high-end PDP-11 clones.
There have been several modifications of MOS named MNOS
, DEMOS
, INMOS etc.
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....
clone
Clone (computer science)
In computing, a clone is a hardware or software system that is designed to mimic another system. Compatibility with the original system is usually the explicit purpose of cloning hardware or low-level software such as operating systems...
of Unix
Unix
Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna...
in the 1980s. This operating system
Operating system
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...
was commonly found on SM EVM
SM EVM
SM EVM was the general name for several types of Soviet and Comecon minicomputers produced in the 1970s and 1980s. Production began in 1975....
minicomputer
Minicomputer
A minicomputer is a class of multi-user computers that lies in the middle range of the computing spectrum, in between the largest multi-user systems and the smallest single-user systems...
s; it was also ported to ES EVM
ES EVM
ES EVM was a series of clones of IBM's System/360 and System/370 mainframes, released in the Comecon countries under the initiative of the Soviet Union since the 1960s. Production continued until 1998...
and Elbrus
Elbrus (computer)
The Elbrus is a line of Soviet and Russian computer systems developed by Lebedev Institute of Precision Mechanics and Computer Engineering.In 1992 a spin-off company Moscow Center of SPARC Technologies was created and continued development....
. MOS was also used in high-end PDP-11 clones.
There have been several modifications of MOS named MNOS
MNOS
MNOS was a Unix-like operating system developed in the Soviet Union. It was derived from Unix Version 6 and consequently heavily modified to incorporate many features of BSD Unix...
, DEMOS
DEMOS
DEMOS was a Unix-like operating system developed in the Soviet Union...
, INMOS etc.