Computer scientist Mark Dean born

Computer scientist Mark Dean born in Jefferson City, Tennessee. He holds three of the nine original IBM patents upon which the IBM PC personal computers were based. He led the design team responsible for creating the first one-gigahertz computer processor chip.

Dean is the first African-American to become an IBM Fellow which is the highest level of technical excellence at the company. In 1997, he was inducted into the National Inventors Hall of Fame. Currently, he is an IBM Vice President overseeing the company's Almaden Research Center in San Jose, California.