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Tennessee native Dr. Mark Dean joined IBM in 1980. He became part of the team that developed the IBM Personal Computer (model 5150, commonly known as the IBM PC), released in 1981. He is named on three of the nine original patents that define foundational IBM PC technology. For his numerous achievements at IBM, the firm named Dean an IBM Fellow in 1995, one of only 50 active at the firm and the first African-American so honored.
As of April 26, 2019, April 25 is now officially Mark Dean Day in Knox County, Tennessee. Dr. Dean is an Emeritus Professor at the University of Tennessee - Knoxville.
Here's a really good interview at Engadget with Dr. Dean: Mark Dean designed the first IBM PC while breaking racial barriers.
Here is his Wikipedia page: https://en.wikipedia.org/wiki/Mark_Dean_(computer_scientist)
-=-=-=-=-=- Jayne Cravens Author, The LAST Virtual Volunteering Guidebook
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