Dims

Dennis Ritche

By kadams27

  • Dennis Ritchie Born

    Dennis Ritchie is born

  • Undergraduate Degree from Harvard

    Dennis Ritchie receives his undergraduate degree in physics from Harvard
  • Hired at Bell Labs

    Hired at Bell Labs

    Ritchie joins Bell Labs in the Computing Sciences Research Center
    Unknown. “Dennis M. Ritchie”. Lemelson Massachusetts Institute of Technology. http://lemelson.mit.edu/resources/dennis-m-ritchie. Accessed 26 October 2018.

  • Doctorate in Mathematics from Harvard

    Ritchie receives his doctorate degree in the field of mathematics from Harvard University.
  • UNIX Operating System Created

    UNIX Operating System Created

    Dennis Ritchie and Ken Thompson work together to create the UNIX operating system. Created with the B programming language.
    Unknown. “Dennis M. Ritchie”. Lemelson Massachusetts Institute of Technology. http://lemelson.mit.edu/resources/dennis-m-ritchie. Accessed 26 October 2018.

  • UNIX Ported to PDP-11

    Bell Labs ports the operating system to a PDP-11 for the Patent Office at the Labs.
    Van Vleck, Tom. “Dennis M. Ritchie”. Association for Computing Machinery. https://amturing.acm.org/award_winners/ritchie_1506389.cfm. Accessed 27 October 2018.

  • C Language Invented

    Ritchie creates the C programming language after the development of UNIX

  • UNIX Rewritten in C

    After porting UNIX to different AT&T systems, the operating system is rewritten in the C language.
    Van Vleck, Tom. “Dennis M. Ritchie”. Association for Computing Machinery. https://amturing.acm.org/award_winners/ritchie_1506389.cfm. Accessed 27 October 2018.

  • UNIX Popularity

    About 600 systems were running UNIX, and continued to be ported to smaller computers.
    Van Vleck, Tom. “Dennis M. Ritchie”. Association for Computing Machinery. https://amturing.acm.org/award_winners/ritchie_1506389.cfm. Accessed 27 October 2018.

  • Turing Award

    For his contributions to the UNIX OS, Ritchie and Thompson receive the Turing Award

  • Head of System Software Research Department

    Appointed as head of the department at Bell Labs and led further development in software.
    Hosch, William. “Dennis M. Ritchie”. Encyclopedia Britannica, 8 September 2018, https://www.britannica.com/biography/Dennis-M-Ritchie. Accessed 26 October 2018.
  • Plan 9 Released

    Plan 9 Released

    Ritchie's group of researchers develop the Plan 9 OS and release it to the public.
  • U.S. National Medal of Honor

    U.S. National Medal of Honor

    Both Ritchie and Thompson receive a Medal of Honor for their development of UNIX.
    Hosch, William. “Dennis M. Ritchie”. Encyclopedia Britannica, 8 September 2018, https://www.britannica.com/biography/Dennis-M-Ritchie. Accessed 26 October 2018.

  • Dennis Ritchie Retires

    After the different company merges with Bell Labs, Ritchie retires from head of his department.
    Van Vleck, Tom. “Dennis M. Ritchie”. Association for Computing Machinery. https://amturing.acm.org/award_winners/ritchie_1506389.cfm. Accessed 27 October 2018.

  • Dennis Ritchie Passes Away

    In 2011, Ritchie passes away.