In 1967, Ritchie began working at the Bell Labs Computing Sciences Research Center, and in 1968, he defended his PhD thesis on "Computational Complexity and Program Structure" at Harvard under the supervision of Patrick C. Version 7 Unix for the PDP-11, including Dennis Ritchie's home directory: /usr/dmr He graduated from Harvard University with degrees in physics and applied mathematics. As a child, Dennis moved with his family to Summit, New Jersey, where he graduated from Summit High School. Ritchie, a longtime Bell Labs scientist and co-author of The Design of Switching Circuits on switching circuit theory. He was the "R" in K&R C, and commonly known by his username dmr.ĭennis Ritchie was born in Bronxville, New York. Ritchie was the head of Lucent Technologies System Software Research Department when he retired in 2007.
Ritchie and Thompson were awarded the Turing Award from the ACM in 1983, the Hamming Medal from the IEEE in 1990 and the National Medal of Technology from President Bill Clinton in 1999. He is most well known for creating the C programming language and, with long-time colleague Ken Thompson, the Unix operating system and B programming language.
October 12, 2011) was an American computer scientist. Computer History Museum Fellow (1997) ĭennis MacAlistair Ritchie (Septem– c.
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