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Leo III Logic Board

One of the many logic boards that would have been installed in a LEO III computer.

Board no: S101/30N1/3; S101/30P2/3
Serial no: S006756

The board is part of our onsite display for the National Lottery Heritage Funded-project 'Swiss Rolls, Tea and the Electronic Office'.

The first Leo III was completed in 1961, not long before the company was merged with the English Electric Company, which not only broke up the team that had done so much for the UK computer industry, but also marked the decline of the computer industry in the country.

Incredibly some machines were still in use in the General Post Office until 1982.

Manufacturer: LEO Computers LTD
Date: early 1960s

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Leo III Logic Board Articles:

Item Manufacturer Date
Leo III Tape Reels English Electric Leo 1966

Magazines RELATED to Leo III Logic Board in our Library

Item Manufacturer Date
The Computer Journal July 1960 Jul 1960
The Computer Journal April 1962 Apr 1962
The Computer Journal April 1963 Apr 1963

Other Systems Related To Leo III Logic Board:

Item Manufacturer Date
Program Wiring Subset Unit from LEO III LEO Computers Ltd c1965

This exhibit has a reference ID of CH52240. Please quote this reference ID in any communication with the Centre for Computing History.


Leo III Logic Board

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