The Design of Colossus (foreword by Howard Campaigne)

  title={The Design of Colossus (foreword by Howard Campaigne)},
  author={Thomas H. Flowers},
  journal={Annals of the History of Computing},
  • T. H. Flowers
  • Published 1 July 1983
  • Art
  • Annals of the History of Computing
This article describes the construction and operation of the Colossus machines. The machines had most if not all of the essential features of a modern computer, except that variable programming was provided not by memory store but by hard-wired function units selected and interconnected by switches operated by the mathematician-programmers. 
Advances in I/O, Speedup, and Universality on Colossus, an Unconventional Computer
A universal Turing machine could have been implemented on a clustering of the ten Colossus machines installed at Bletchley Park, England, by the end of WWII in 1945, according to the hardware capability and specification of Colossus.
Unwinding performance and power on Colossus, an unconventional computer
  • B. Wells
  • Computer Science
    Natural Computing
  • 2010
It is seen that a UTM could have been implemented on a clustering of the ten Colossus machines installed at Bletchley Park, England, by the end of WWII in 1945, and several advances in input, output, speed, processing, and applications are offered.
In the footsteps of Colossus: a description of Oedipus
  • S. Lavington
  • Psychology
    IEEE Annals of the History of Computing
  • 2006
Oedipus, a special-purpose rapid analytical machine using novel digital storage, developed by GCHQ and the UK companies Elliott and Ferranti, and its history has only recently been made publicly available.
Colossus: its origins and originators
  • B. Copeland
  • History
    IEEE Annals of the History of Computing
  • 2004
The roles played by Thomas Flowers, Alan Turing, William Tutte, and Max Newman in the events leading to the installation of the first Colossus at Bletchley Park, Britain's wartime code-breaking establishment, in December 1943 are clarified.
The rebuilding of Colossus at Bletchley Park
Rebuilding the Colossus Mk2 computer used in code breaking during World War II has been particularly difficult and challenging - almost nothing remained of the original machines. The original
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The Secret Digit
Three Borehamwood digital computers were designed to perform tasks for the UK’s intelligence services, via GCHQ (Government Communications Headquarters), and went to a joint British–Australian long-range missile facility in Australia, to be used in analysing data from the Woomera test range.
The autoscritcher and the superscritcher: aids to cryptanalysis of the German Enigma cipher machine, 1944-6
The Superscritcher proved the practicality of electronic digital technology for computing applications and showed that a more flexible architecture was needed to allow the solving of more than one class of problems.
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The solutions presented in this thesis help designers of stream processors to better optimize for low-latency processing, and users to increase their query performance by providing better metrics and automating operational aspects.
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This article presents the virtual rebuilding of the first computer made in Italy: the Macchina Ridotta (MR) of the University of Pisa, and simulation proved to be the key tool to support the experimental approach adopted for understanding the MR technology, rebuilding it, and assessing its achievements.