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Christopher S. Strachey (/ ˈ s t r eɪ tʃ i /; 16 November 1916 – 18 May 1975) was a British computer scientist. [1] [2] [3] He was one of the founders of denotational semantics, and a pioneer in programming language design and computer time-sharing. [4]
Free University of Brussels: Scheme 1997 Squeak: Alan Kay, et al. at Apple Computer: Smalltalk-80, Self 1997 ECMAScript: ECMA TC39-TG1 JavaScript: 1997 F-Script Philippe Mougin Smalltalk, APL, Objective-C 1997 ISLISP: ISO Standard ISLISP Common Lisp: 1997 Tea: Jorge Nunes Java, Scheme, Tcl: 1997 REBOL: Carl Sassenrath, Rebol Technologies Self ...
In theoretical computer science, the time complexity is the computational complexity that describes the amount of computer time it takes to run an algorithm. Time complexity is commonly estimated by counting the number of elementary operations performed by the algorithm, supposing that each elementary operation takes a fixed amount of time to ...
In computer programming languages, a switch statement is a type of selection control mechanism used to allow the value of a variable or expression to change the control flow of program execution via search and map. Switch statements function somewhat similarly to the if statement used in programming languages like C/C++, C#, Visual Basic .NET ...
SEAC (Standards Eastern Automatic Computer) demonstrated at US NBS in Washington, DC – was the first fully functional stored-program computer in the U.S. May 1950: UK The Pilot ACE computer, with 800 vacuum tubes, and mercury delay lines for its main memory, became operational on 10 May 1950 at the National Physical Laboratory near London.
Helped establish and taught the first graduate course in computer science (at Harvard); invented the APL programming language; contributions to interactive computing 1801 Jacquard, Joseph Marie: Built and demonstrated the Jacquard loom, a programmable mechanized loom controlled by a tape constructed from punched cards 1206 Al-Jazari
At the time, computer science was partitioned into numerical analysis, artificial intelligence, and programming languages. Based on his study and The Art of Computer Programming book, Knuth decided the next time someone asked he would say, "Analysis of algorithms".
1954 – Radix sort computer algorithm developed by Harold H. Seward; 1964 – Box–Muller transform for fast generation of normally distributed numbers published by George Edward Pelham Box and Mervin Edgar Muller. Independently pre-discovered by Raymond E. A. C. Paley and Norbert Wiener in 1934. 1956 – Kruskal's algorithm developed by ...