Page last updated at 06:01 GMT, Tuesday, 2 February 2010

World War II computer Colossus that cracked Nazi code


Retired British spy catcher Tony Sale rebuilt Colossus, the world's first recognisably programmable computer.

Colossus was instrumental in the work of code cracking operations at Bletchley Park in Buckinghamshire during World War II.

It deciphered messages sent by German over the Lorenz Cipher.

Colossus was kept as a state secret until the end of the 1990s.


Story Tools


Sign in

BBC navigation

Copyright © 2019 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Americas Africa Europe Middle East South Asia Asia Pacific