Colossus

Shrouded in secrecy until recently, Colossus was the world's first fully-functioning electronic computer, built during the Second World War and used at Bletchley Park to crack the codes of high-level Nazi communications. This collection of essays delves into code-breaking, personal recollections, and declassified information.

Copeland's book is a masterpiece.

Review from previous edition Copeland and other contributors have rightly done Flowers and the Tunny code-breakers proud

An engaging book that will be essential reading for historians of twentieth-century technology and warfare.

formidably detailed

compelling compilation

Jack Copeland is Professor of Philosophy at the University of Canterbury in New Zealand and Director of the Turing Archive for the History of Computing, and has been studying the history of Bletchley Park since 1992. He is a contributor to Scientific American and his previous publications include Artificial Intelligence, (Blackwell, 1993), Logic and Reality (OUP, 1996), Turing's Machines (OUP, forthcoming), The Essential Turing (OUP, 2004), and Alan Turing's Automatic Computing Engine (OUP, 2005).