History of Science Museum: Collection Database Search

Narratives

Historical Background

Valves of this type were used in the original Colossus, the world's first large electronic valve programmable logic calculator, first built by the British in 1943. Ten of these were built before the end of WW2 and used at Bletchley Park to decrypt German codes including the most complicated German code, Lorenz.

Other narratives:

Related Objects: