Discover the incredible, long-classified history of Colossus, the world's first fully-functioning electronic digital computer. Built in secret at Bletchley Park during World War II, Colossus played an invaluable role in cracking enemy codes, yet its existence and design were shrouded in secrecy for decades. This book, made possible only by the recent declassification of wartime documents, finally reveals its secrets. It features:‍

• First-hand accounts from the extraordinary staff who worked with Colossus.

• The never-before-published personal testimony of Thomas Flowers, the machine's chief architect.

• ‍An introductory essay on the history of cryptography by bestselling author Simon Singh.

‍Explore the inner workings of this remarkable machine, its historical importance, and the profound impact it had on every generation of computing technology that followed. A must-read for anyone interested in code-breaking, WWII history, or the origins of the digital age.

Buyers from Europe and USA can now purchase the book online by selecting the appropriate item with postage to your area. For all other countries, please Email Operations@tnmoc.org for postage costs.