The Computer Pioneers: The Making of the Modern Computer |
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Page 80
... messages . It only worked out the initial positions of the Enigma rotors . If that information led to a successful decryption , the codebreakers reported a " good stop . " At that point cries of " Reds up ! " or " Greens up ! " would ...
... messages . It only worked out the initial positions of the Enigma rotors . If that information led to a successful decryption , the codebreakers reported a " good stop . " At that point cries of " Reds up ! " or " Greens up ! " would ...
Page 82
... messages by wire rather than by radio . That made Fish signals hard to intercept . Fortunately for the Allies , one of the cables bearing Fish mes- sages ran through neutral Sweden for a short distance , and the Swedes were able to tap ...
... messages by wire rather than by radio . That made Fish signals hard to intercept . Fortunately for the Allies , one of the cables bearing Fish mes- sages ran through neutral Sweden for a short distance , and the Swedes were able to tap ...
Page 134
... messages into code as well as decipher them . Mauchly's machine used a simple substitution method like that of the early Enigma , replacing one character in a message with another , at random . Punched cards were used to record messages ...
... messages into code as well as decipher them . Mauchly's machine used a simple substitution method like that of the early Enigma , replacing one character in a message with another , at random . Punched cards were used to record messages ...
Contents
Preface | 11 |
George Stibitz and the Bell Computers | 33 |
The Harvard Mark I and the ZSeries | 53 |
Copyright | |
10 other sections not shown
Common terms and phrases
Aberdeen analog arithmetic Atanasoff and Berry Babbage Babbage's Bell Labs BINAC binary Bletchley Park Bombe Brainerd British building built Bush calculating machines called Charles Babbage chine ciphers circuits codebreaking Colossus components computer pioneers computing machines condensers delay storage lines described Description and Accomplishments desktop calculator device differential analyzer digital computer Eckert and Mauchly EDVAC electric electromechanical electronic computer engineers ENIAC Enigma George Stibitz German Goldstine hardware Harvard Heath Robinson helped History of Computing Howard Aiken IAS computer idea input invention Iowa John Mauchly JOHNNIAC Kelvin Langley later looked Mark math mathematician mathematics Mauchly's mechanical memory mercury delay messages Model Moore School Neumann Norbert Wiener number sieves numbers once operation patent problem punched puters relays reliable rotors SEAC solve SSEC stored-program concept switches tape tion told Turing Turing's University vacuum tubes Watson wheels Williams tube wires Zuse Zuse's