CalendarZ

    • English English
    • español español
    • français français
    • português português
    • русский русский
    • العربية العربية
    • 简体中文 简体中文
  • Home
  • Religious Holidays
  • National Holidays
  • Other Days
  • On This Day
  • Tools
    • Date converter
    • Age Calculator
  1. Home
  2. On This Day
  3. May
  4. 11
  5. Clarence Ellis (computer scientist)

Births on May 11

1943May, 11

Clarence Ellis (computer scientist)

Clarence Ellis, American computer scientist and academic (d. 2014)
Clarence "Skip" Ellis (May 11, 1943 – May 17, 2014) was an American computer scientist, and Emeritus Professor of Computer Science and Cognitive Science at the University of Colorado at Boulder. While at the CU-Boulder, he was the director of the Collaboration Technology Research Group and a member of the Institute of Cognitive Science. Ellis was the first African-American to earn a Ph.D. in Computer Science (1969), and the first African-American to be elected a Fellow of the ACM (1997). Ellis was a pioneer in Computer Supported Cooperative Work (CSCW) and Groupware. He and his team at Xerox PARC created OfficeTalk, one of the first groupware systems. Ellis also pioneered Operational Transformation, which is a set of techniques that enables real-time collaborative editing of documents.

References

  • Clarence Ellis (computer scientist)

Choose Another Date

Events on 1943

  • 11Feb

    Dwight D. Eisenhower

    World War II: General Dwight D. Eisenhower is selected to command the allied armies in Europe.
  • 30May

    Auschwitz concentration camp

    The Holocaust: Josef Mengele becomes chief medical officer of the Zigeunerfamilienlager (Romani family camp) at Auschwitz concentration camp.
  • 19Jun

    Pittsburgh Steelers

    The Philadelphia Eagles and Pittsburgh Steelers in the NFL merge for one season due to player shortages caused by World War II.
  • 6Nov

    Kiev

    World War II: The Soviet Red Army recaptures Kiev. Before withdrawing, the Germans destroy most of the city's ancient buildings.
  • 4Dec

    Josip Broz Tito

    World War II: In Yugoslavia, resistance leader Marshal Josip Broz Tito proclaims a provisional democratic Yugoslav government in-exile.

About CalendarZ

CalendarZ

In addition of showing the dates of significant holidays and events; CalendarZ enables you easily check out the time remaining to a certain date and all other details.

Our Partners

WoWDeals : All Deals in One Place

Quick Navigation

  • Home
  • Upcoming Holidays
  • Religious Holidays
  • National Holidays
  • Other Days
  • Blog
  • Age Calculator
  • On This Day

© 2025 CalendarZ. All Rights Reserved. Contact Us / Privacy Policy

English   |   español   |   français   |   português   |   русский   |   العربية   |   简体中文