DEMOS
| DEMOS | |
|---|---|
 DEMOS-DVK 3.0, 2011 | |
| Developer | Kurchatov Institute of Atomic Energy, DEMOS Co-operative |
| OS family | Unix-like (BSD) |
| Working state | Discontinued |
| Initial release | 1982 |
| Final release | 2.x / 1991 |
| Available in | Russian |
| Supported platforms | SM-4, Elektronika-1082, Elektronika-85, BESM, ES EVM, VAX-11, PC/XT, Motorola 68020 |
| Kernel type | Monolithic |
| Default user interface | Command-line interface |
| Preceded by | MNOS |
DEMOS (Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema: Russian: Диалоговая Единая Мобильная Операционная Система, ДЕМОС, lit. 'Interactive Unified Portable Operating System') is a Unix-like operating system developed in the Soviet Union. It is derived from Berkeley Software Distribution (BSD) Unix.
Development
DEMOS's development was initiated in the Kurchatov Institute of Atomic Energy in Moscow in 1982, and development continued in cooperation from other institutes, and commercialized by DEMOS Co-operative which employed most key contributors to DEMOS and to its earlier alternative, MNOS (a clone of Version 6 Unix). MNOS and DEMOS version 1.x were gradually merged from 1986 until 1990, leaving the joint OS, DEMOS version 2.x, with support for different Cyrillic script character encoding (charsets) (KOI-8 and U-code,[1] used in DEMOS 1 and MNOS, respectively).
Initially it was developed for SM-4 (a PDP-11/40 clone) and SM-1600. Later it was ported to Elektronika-1082, BESM, ES EVM, clones of VAX-11 (SM-1700), and several other platforms, including PC/XT, Elektronika-85 (a clone of DEC Professional), and several Motorola 68020-based microcomputers.
The development of DEMOS effectively ceased in 1991, when the second project of the DEMOS team, RELCOM, took priority.
 | You can help expand this article with text translated from the corresponding article in Russian. (December 2016) Click [show] for important translation instructions.
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See also
References
- ^ "THE WHOLE TRUTH ABOUT DEMOS" (in Russian). December 1998. Archived from the original on 21 October 2016. Retrieved 2 January 2025.
[DEMOS 2.x] could work in two encodings KOI-8 and YUKOD
- Mapping Russian Cyberspace — Rafal Rohozinski, United Nations Research Institute for Social Development, 1999
- https://astr0baby.wordpress.com/2016/10/17/soviet-unix-clone-demos/
- https://www.opendemocracy.net/en/odr/usenet-coup/
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (November 2008) |
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