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Dennis MacAlistair Ritchie (September 9, 1941 – c. October 12, 2011) was an American computer scientist. [3] He created the C programming language and the Unix operating system and B language with long-time colleague Ken Thompson. [3]
The very first time a stored-program computer held a piece of software in electronic memory and executed it successfully, was 11 am 21 June 1948, at the University of Manchester, on the Manchester Baby computer. It was written by Tom Kilburn, and calculated the highest factor of the integer 2^18 = 262,144. Starting with a large trial divisor ...
In 1963, at 15, he wrote his first computer program. [12] Kurzweil created pattern-recognition software that analyzed the works of classical composers, then synthesized its own songs in similar styles. In 1965 he was invited to appear on the CBS television program I've Got a Secret, [13] where he performed a piano piece composed by a computer ...
The cover of the book The C Programming Language, first edition, by Brian Kernighan and Dennis Ritchie. In 1978 Brian Kernighan and Dennis Ritchie published the first edition of The C Programming Language. [18] Known as K&R from the initials of its authors, the book served for many years as an informal specification of the language.
Led the team that created FORTRAN (Formula Translation), the first practical high-level programming language, and formulated the Backus–Naur form that described the formal language syntax. 850~ Banū Mūsā: Three brothers who wrote the Book of Ingenious Devices, describing what appears to be the first programmable machine, an automatic flute ...
It is a very popular language, especially for systems programming – as it is flexible and fast. C was considered a refreshing change in the computing field because it helped introduce structured programming. Inspired by C, C++, was introduced in the 1980s, and in turn helped usher in the era of object-oriented programming. 1972: US
[1] They also invented an automatic flute player which appears to have been the first programmable machine. [2] c. 1000 Abū Rayhān al-Bīrūnī invented the Planisphere, an analog computer. [3] He also invented the first mechanical lunisolar calendar which employed a gear train and eight gear-wheels. [4]
The C Programming Language (sometimes termed K&R, after its authors' initials) is a computer programming book written by Brian Kernighan and Dennis Ritchie, the latter of whom originally designed and implemented the C programming language, as well as co-designed the Unix operating system with which development of the language was closely intertwined.