Dennis Ritchie Scientist

Dennis MacAlistair Ritchie (September 9, 1941 – c. October 12, 2011) was an American computer scientist. 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 and commonly known by his username dmr.

Personal facts

Birth date	September 09, 1941
Birth place	Bronxville New York
Date of death	January 01, 2011
Place of death	Berkeley Heights New Jersey
Education	Harvard University
Known for	BCPL B (programming language) C (programming language) Multics ALTRAN Unix