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I don't think the collosus at Bletchley is actually original. IIRC, most of the working big machines at Bletchley were reproduced from memory (story goes that

by a-dub 7y ago

I don't think the collosus at Bletchley is actually original. IIRC, most of the working big machines at Bletchley were reproduced from memory (story goes that all the machines and plans were destroyed after the war because it was "too dangerous" to have them fall into the wrong hands) by the retired telephony engineers who worked on the originals as a sort of hobby club for retirees. There was a full time guy named Tony Sale who I think organized these efforts who would be there hacking away on stuff and was happy to talk about all of it...

rst 7y ago
It is a reconstruction -- built from components similar to those of the original machines, but probably varying from the originals in minor detail because the original plans were also destroyed. The rebuild project and the fate of the original machines is summarized briefly in https://en.wikipedia.org/wiki/Colossus_computer#Influence_and_fate https://en.wikipedia.org/wiki/Colossus_computer#Influence_an...