Colossus: The First Electronic Computer: The Secrets of Bletchley Park's Code-breaking Computers

Front Cover
B. Jack Copeland
OUP Oxford, Feb 23, 2006 - Computers - 462 pages
7 Reviews
At last - the secrets of Bletchley Park's powerful codebreaking computers. This is a history of Colossus, the world's first fully-functioning electronic digital computer. Colossus was used during the Second World War at the Government Code and Cypher School at Bletchley Park, where it played an invaluable role cracking enemy codes. Until very recently, much about the Colossus machine was shrouded in secrecy, largely because the codes that were employed remained in use by the British security services until a short time ago. This book has only become possible due to the recent declassification in the US of wartime documents. With an introductory essay on cryptography and the history of code-breaking by Simon Singh, this book reveals the workings of Colossus and the extraordinary staff at Bletchley Park through personal accounts by those who lived and worked with the computer. Among them is the testimony of Thomas Flowers, who was the architect of Colossus and whose personal account, written shortly before he died, is published here for the first time. Other essays consider the historical importance of this remarkable machine, and its impact on the generations of computing technology that followed.

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LibraryThing Review

User Review  - MichaelHodges - LibraryThing

A very rich history of WW2 Codebreaking genii and their machines. Not an easy subject for most laymen but well worth slugging through to the very end. The book is a compendium written by a sizeable ... Read full review

LibraryThing Review

User Review  - jztemple - LibraryThing

Only in the past few years has the story of the Colossus computers and their use to break the German's WW2 Tunny encoding machines come to light. Unlike the rather well known story of the Enigma ... Read full review

About the author (2006)


Jack Copeland is a Reader in Philosophy and Director of the Turing Project at the University of Canterbury in New Zealand. A contributor to Scientific American, his books include Turing's Machines, Artificial Intelligence, and The Essential Turing.

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