The Secrets of Bletchley Park's Codebreaking Computers
Colossus at wartime Bletchley Park.
B. Jack Copeland.1
Table of Contents
Introduction
The Tunny machine
A sample decrypt
Central figures in the attack on Tunny
Breaking the Tunny machine
Turingery
Tutte’s statistical method
Heath Robinson
Flowers, neglected pioneer of computing
Colossus
Misconceptions about Colossus
Postwar
Colossus and the modern computer
Colossus and two operators from the Women’s Royal Naval Service, Dorothy Du Boisson (left) and Elsie Booker.2
The Lorenz Schlüsselzusatz (cip...
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