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Dennis MacAlistair Ritchie
Dennis Ritchie 2011.jpg
Dennis Ritchie, 1999
Born (1941-09-09)September 9, 1941
Died found dead October 12, 2011(2011-10-12) (aged 70)
Alma mater Harvard University
Known for ALTRAN
Awards Turing Award
National Medal of Technology
Scientific career
Fields Computer science
Institutions Lucent Technologies
Bell Labs

Dennis MacAlistair Ritchie (b. September 9, 1941; found dead October 12, 2011), was an American computer scientist who "helped shape the digital era." He created the C programming language and, with long-time colleague Ken Thompson, the UNIX operating system. Ritchie and Thompson received the Turing Award from the ACM in 1983, the Hamming Medal from the IEEE in 1990 and the National Medal of Technology from President Clinton in 1999. Ritchie was the head of Lucent Technologies System Software Research Department when he retired in 2007. He was the 'R' in K&R C.

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