... The National Museum of Computing at Bletchley houses a collection of computers, which includes the rebuilt Colossusmachine used to break high-level German codes during the war. To find out more about Bletchley Park visit its website...
http://hardware.silicon.com/servers/0,39024647,39429758,00.htm
...receiving station in Britain. Two teams would then compete in decrypting the messages, one using the reconstructed Colossusmachine, and one using a PC program that emulates Colossus in software. The announcement of the Cipher Event also invited...
http://www.ddj.com/development-tools/207800151