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Wikipedia / List of transistorized computers

This is a list of transistorized computers, which were digital computers that used discrete transistors as their primary logic elements. Discrete transistors were a feature of logic design for computers from about 1960, when reliable transistors became economically available, until monolithic integrated circuitss displaced them in the 1970s. The list is organized by operational date or delivery year to customers. Computers announced, but never completed, are not included. Some very early "transistor" computers may still have included vacuum tubes in the power supply or for auxiliary functions.

1950s

1953

1954

  • Bell Labs TRADIC for U.S. Air Force

1955

  • Harwell CADET demonstrated February 1955, one-off scientific computer

1956

1957

  • Burroughs SM-65 Atlas ICBM Guidance Computer MOD1, AN/GSQ-33 (no relation to Manchester ATLAS)

  • Ramo-Wooldridge (TRW) RW-30 airborne computer

  • Univac TRANSTEC, for US Navy

  • Univac ATHENA, US Air Force missile guidance (ground control)

  • IBM 608 transistor calculator (its development was preceded by the prototyping of an experimental all-transistor version of the 604 demonstrated in October 1954), announced 1955, first shipped December 1957

  • DRTE Computer, Canadian experimental system delivered 1957, added parallel math unit and other improvements in 1960.

  • ETL Mark IV computer, upgraded to the ETL Mark IV A in 1958, a transistor-based computer built at the Japanese government's ElectroTechnical Laboratory, inspired almost every Japanese computer company.

1958

1959

1960s

1960

1961

GE-200 series

1962

1963

1964

1965

1966

1967

1968

1969

See also

Notes

References