SM-4

SM-4

SM-4

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For the U.S. Navy missile, see RIM-66 Standard.
For other uses, see SM4.

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:

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. [1]
    Janez Skrubej (2012). The Cold War for Information Technology: The Inside Story. Strategic Book. ISBN 978-1618978356.
  2. [2]
    Soviet Physics: Uspekhi - Volume 27, Issues 1-6. 1984. p. 454.
  3. [3]
    Richard W. Judy; Robert W. Clough (1989). "Soviet computers in the 1980s". Advances in Computers - Volume 29. Academic Press. p. 288. ISBN 0080566618.
  4. [4]
    Advances in Computers - Volume 30. Academic Press. 1990. p. 230. ISBN 0080566626.


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