By Tim Ferguson, 27 March 2008 16:06
silicon.com took a trip to Bletchley Park to see the rebuilt Colossus machine used to break the German Enigma code during World War II.
This shows paper tape - punched with enciphered messages - being read by Colossus at a rate of 5,000 characters per second.
See more pictures here and check out the video of former spy Tony Sale who rebuilt Colossus, explaining how it all works.
Photo credit: Andy McCue



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