Jump to ContentJump to Main Navigation
Colossus – The secrets of Bletchley Park's code-breaking computers - Oxford Scholarship Online
Users without a subscription are not able to see the full content.

Colossus: The secrets of Bletchley Park's code-breaking computers

B. Jack Copeland


The American ENIAC is customarily regarded as the first electronic computer. In this fascinating volume, Jack Copeland rewrites the history of computer science, arguing that in reality Colossus--the giant computer built in Bletchley Park by the British secret service during World War II--predates ENIAC by two years. Until very recently, much about the Colossus machine was shrouded in secrecy, largely because the code-breaking algorithms employed during World War II remained in use by the British security services until a short time ago. Copeland has brought together memoirs of veterans of Blet ... More

Bibliographic Information

Print publication date: 2006 Print ISBN-13: 9780192840554
Published to Oxford Scholarship Online: November 2020 DOI:10.1093/oso/9780192840554.001.0001


Affiliations are at time of print publication.

B. Jack Copeland, author

Show Summary Details

subscribe or login to access all content.



Section 1 Bletchley Park and the Attack on Tunny

Section 2 Colossus

Section 3 The Newmanry

Section 4 The Testery

Section 5 T. H. Flowers’ Laboratory at Dollis Hill

Section 6 Sturgeon, The Fish That Got Away