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 circuits 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.

Main article: Transistor computer
TRADIC

1950s
Harwell CADET

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[5][6]
  • Univac TRANSTEC,[7] 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 Dec 1957

1958
Philco 2000
NCR 304

1959
IBM 1401

1960s
UNIVAC LARC

1960

1961
IBM 7030

1962
ICT 1301

1963
CDC 3800
PDP-6

1964
SDS 930

1965
NCR 315

1966
CDC 6400
  • CDC 6400 (Jun 1966)

1967

1968

1969

See also

Notes
  1. Used for training and research purposes.
  2. Revised in 1969 as Cellatron 8205.

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