List of transistorized computers

Summary

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.

TRADIC

1950s edit

 
Harwell CADET

1953 edit

1954 edit

  • Bell Labs TRADIC for U.S. Air Force

1955 edit

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

1956 edit

1957 edit

  • 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 December 1957
  • DRTE Computer, Canadian experimental system delivered 1957, added parallel math unit and other improvements in 1960.[8]

1958 edit

 
Philco 2000
 
NCR 304

1959 edit

 
IBM 1401

1960s edit

 
UNIVAC LARC

1960 edit

1961 edit

 
IBM 7030

1962 edit

 
ICT 1301

1963 edit

 
CDC 3800
 
PDP-6

1964 edit

 
SDS 930

1965 edit

 
NCR 315

1966 edit

 
CDC 6400

1967 edit

1968 edit

1969 edit

See also edit

Notes edit

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

References edit

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