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This Week in History of Computing

Robert Dewar
Robert Dewar

On June 21,1945 was born Robert Berriedale Keith Dewar. He was an English-born American computer scientist and educator. He helped to develop software languages and compilers and was an outspoken advocate of freely licensed open source software. He was a founder, CEO and president of AdaCore software company. Dewar was an outspoken advocate of freely licensed open source software and an expert in copyright and patent law for software.
Source: https://en.wikipedia.org/wiki/Robert_Dewar

Alan Turing
Alan Turing

On June 23th 1912 was born Alan Mathison Turing. He was an English mathematician, computer scientist, logician, cryptanalyst, philosopher, and theoretical biologist. Turing was highly influential in the development of theoretical computer science, providing a formalisation of the concepts of algorithm and computation with the Turing machine, which can be considered a model of a general-purpose computer. Turing is widely considered to be the father of theoretical computer science and artificial intelligence. Despite these accomplishments, he was never fully recognised in his home country during his lifetime due to his homosexuality and because much of his work was covered by the Official Secrets Act.

During the Second World War, Turing worked for the Government Code and Cypher School (GC&CS) at Bletchley Park, Britain’s codebreaking centre that produced Ultra intelligence. For a time he led Hut 8, the section that was responsible for German naval cryptanalysis. Here, he devised a number of techniques for speeding the breaking of German ciphers, including improvements to the pre-war Polish bombe method, an electromechanical machine that could find settings for the Enigma machine.

Turing played a crucial role in cracking intercepted coded messages that enabled the Allies to defeat the Nazis in many crucial engagements, including the Battle of the Atlantic, and in so doing helped win the war.

Turing was prosecuted in 1952 for homosexual acts; the Labouchere Amendment of 1885 had mandated that “gross indecency” was a criminal offence in the UK. Turing died in 1954, 16 days before his 42nd birthday, from cyanide poisoning.
Source: https://en.wikipedia.org/wiki/Alan_Turing

James Martin
James Martin

On June 24, 2013 died James Martin. He was a British Information Technology consultant and author, known for his work on information technology engineering. Martin was an expert in the field of systems design, software development methodology, information technology engineering and computer-aided software engineering. He was one of the first to promote fourth-generation programming languages, and was one of the main developers of the Rapid Application Development methodology.
Source: https://en.wikipedia.org/wiki/James_Martin_(author)

Maurice Wilkes
Maurice Wilkes

On June 26, 1913 was born Sir Maurice Vincent Wilkes. He was a British computer scientist who designed and helped build the Electronic delay storage automatic calculator (EDSAC), one of the earliest stored program computers and invented microprogramming, a method for using stored-program logic to operate the control unit of a central processing unit’s circuits. At the time of his death, Wilkes was an Emeritus Professor of the University of Cambridge.
Source: https://en.wikipedia.org/wiki/Maurice_Wilkes

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