Engineering:SM-4
The SM-4 (CM-4) is a PDP-11/40 compatible system, manufactured in the Eastern Bloc in the 1980s. It was very popular in science and technology.[citation needed] They were manufactured in the Soviet Union, Bulgaria and Hungary[citation needed], beginning in 1975.[1]
The standard configuration includes 128 or 256 KB core memory,[1] tape puncher, two RK-05 removable 2.5 MB disks and two RK-05F fixed disks, two TU-10 drives and Videoton VDT-340 terminals (VT52 non-compatible). The SM-4 processor operates at 900,000 operations per second.[2]
The SM-series also includes the SM-3. The SM-3 lacks floating point processing, similar to DEC's PDP 11/40 and 11/34 models. In early production, ferrite core memory is used. It operates at 200,000 operations per second in register-to-register operation.[3]
Operating systems commonly used include:
- RT-11 (Rafos after partial translation)[4]
- RSTS/E
- RSX-11
- DSM-11 (DIAMS after partial translations)
- DEMOS and MNOS
The SM-4 was manufactured in seven configurations, numbers SM-1401 through SM-1407.[3]
Similar models include the SM-1420, with semiconductor memory, and the SM-1600, a hybrid of the SM-1420 and the M-6000, a system produced in Minsk.[citation needed]
The main producer of the SM-4 was Minpribor, at a facility in Kyiv, Ukraine , which began production in 1980.[3]
See also
References
- ↑ 1.0 1.1 Janez Skrubej (2012). The Cold War for Information Technology: The Inside Story. ISBN 978-1618978356. https://books.google.com/books?id=XDKQ3CXwl6oC&pg=PT104.
- ↑ Soviet Physics: Uspekhi - Volume 27, Issues 1-6. 1984. p. 454. https://books.google.com/books?id=fa7yAAAAMAAJ&q=SM-4++operations+second.
- ↑ 3.0 3.1 3.2 Richard W. Judy; Robert W. Clough (1989). "Soviet computers in the 1980s". Advances in Computers - Volume 29. p. 288. ISBN 0080566618. https://books.google.com/books?id=M2vUopRmnXcC&pg=PA288.
- ↑ Advances in Computers - Volume 30. 1990. p. 230. ISBN 0080566626. https://books.google.com/books?id=37sdgq5XUgkC&pg=PA230.
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