Diff for Dennis Ritchie

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== Dennis Ritchie ==

'''Dennis MacAlistair Ritchie''' (September 9, 1941 – October 12, 2011) was an American computer scientist. He is best known as the creator of the [[C (programming language)|C programming language]] and as a co‑creator of the [[Unix]] operating system alongside [[Ken Thompson]]. His work laid the foundation for modern computing and influenced the development of numerous operating systems, languages, and tools.

Ritchie was born in Bronxville, New York. He earned a Bachelor's degree in physics and a Ph.D. in applied mathematics from Harvard University. In 1967, he joined [[Bell Labs]], where he remained for most of his career. At Bell Labs, he worked on the Multics project before collaborating with Thompson on the creation of Unix.

== Career and contributions ==
Ritchie's most famous contribution is the C programming language, which he developed between 1969 and 1973. C was designed as a system programming language for writing the Unix kernel. It became one of the most widely used programming languages, influencing later languages such as [[C++]], [[Java (programming language)|Java]], and [[Python (programming language)|Python]].

Together with Ken Thompson, Ritchie wrote the first versions of the Unix operating system. Unix introduced concepts like a hierarchical file system, pipes, and a multi‑user, multi‑tasking environment. It became the basis for many subsequent operating systems, including [[Linux]] and [[BSD]] (Berkeley Software Distribution).

Ritchie also contributed to the development of the [[C++]] language and helped design the [[PL/I]] programming language. He co‑authored the influential book ''The C Programming Language'' with [[Brian Kernighan]].

== Legacy ==
Ritchie received numerous awards, including the [[Turing Award]] in 1983 (jointly with Ken Thompson) and the [[National Medal of Technology]] in 1999. He was elected to the [[National Academy of Engineering]] in 1995. His death in 2011 at age 70 sparked widespread tributes from the computing community, with many noting that his creations underpin vast swaths of modern technology.

The [[Dennis Ritchie Award]] is given annually by the USENIX Association to recognize contributions to systems software.

== See also ==
* [[Ken Thompson]]
* [[Unix]]
* [[C (programming language)]]
* [[Bell Labs]]

[[Category:American computer scientists]]
[[Category:Computer programming language designers]]
[[Category:Unix people]]
[[Category:Turing Award laureates]]