Colossus Computer - Bletchley Park
Introduction
The photograph on this page of Colossus Computer - Bletchley Park by Paul Gillett as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Paul Gillett Taken: 19 Apr 2013
Colossus was the world's first electronic digital computer that was at all programmable. The Colossus computers were used by British codebreakers during World War II to help in the cryptanalysis of the Lorenz cipher. Without them, the Allies would have been deprived of the very valuable intelligence that was obtained from reading the vast quantity of encrypted high-level telegraphic messages between the German High Command (OKW) and their army commands throughout occupied Europe. Colossus used thermionic valves (vacuum tubes) to perform Boolean operations and calculations. http://en.wikipedia.org/wiki/Colossus_computer