The Turing Guide
162 | 15 THE wORlD’S fIRST COmPUTER OPERATORS Perhaps this was a test: some people left at this stage. Those of us who remained ...
IRElAND | 163 Five’)—our notional ship. We would wear no category badges, and if anyone asked us what we did we were to say we w ...
164 | 15 THE wORlD’S fIRST COmPUTER OPERATORS our own mugs in preference to the metal mugs we were issued with. The food was jus ...
IRElAND | 165 punched on the tapes and become adept at reading them: this alphabet was the same as the GPO (General Post Office) ...
166 | 15 THE wORlD’S fIRST COmPUTER OPERATORS was a tricky operation, getting the tape to the right tension: it took a little ti ...
CHAPTER 16 The Testery: breaking Hitler’s most secret code jerry roberts* I joined the Intelligence Corps in autumn 1941. At th ...
168 | 16 THE TESTERy from approximately 282,000 tonnes of shipping lost per month during the early part of 1941, to 64,000 tonne ...
ROBERTS | 169 Those were the people at one end. People at the other end included the generals and field marshals in charge of th ...
170 | 16 THE TESTERy and from these decrypts we knew the enemy’s strategic decisions and their overall thinking. Kesselring was ...
ROBERTS | 171 were plenty of what we called ‘depths’—messages that had been enciphered using the same key (see Chapter 14 for an ...
172 | 16 THE TESTERy Adding 9ROEM9 to FJM5XE—six consecutive letters in the stream—might give DE9GES. DE9GES is possible plainte ...
ROBERTS | 173 Tunny messages entirely by hand. It was during this first phase that the messages giving away the German plans for ...
174 | 16 THE TESTERy Wellington or Marlborough achieved. Without those three great minds, and the many support- ing personnel at ...
CHAPTER 17 Ultra revelations brian randell I n 1974 and 1975 two books (The Ultra Secret and Bodyguard of Lies) were published. ...
176 | 17 UlTRA REVElATIONS No mention was made of Alan Turing, or any of the others who I had learned were involved with Bletchl ...
RANDEll | 17 7 your son’s work in the 1930s laid the theoretical foundations for the modern computer and that the Foreign Office ...
178 | 17 UlTRA REVElATIONS What became clear from my discussions with the Colossus designers was that their interac- tions with ...
RANDEll | 179 To my left in the same row, three empty seats intervening, was the bouncy Englishman, all smiles and laughter. In ...
180 | 17 UlTRA REVElATIONS gave extensive details of the work of the Polish cryptanalysts who originally broke Enigma, how Enigm ...
RANDEll | 181 The Times the next day.^14 I take great pride in the fact that I played a role in arranging this very belated publ ...
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