Dr. Mark Dean started working at IBM in 1980 and was instrumental with the invention of the Personal Computer (PC). He holds three of IBM's original nine PC patents and currently holds more than 20 total patents. The famous African-American inventor never thought the work he was doing would end up being so useful to the world, but he has helped IBM make instrumental changes in areas ranging from the research and application of systems technology circuits to operating environments. One of his most recent computer inventions occurred while leading the team that produced the 1-Gigahertz chip, which contains one million transistors and has nearly limitless potential.
