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Mark E. Dean (born March 2, 1957) is an inventor and computer engineer. He developed the ISA bus, and he led a design team for making a one-gigahertz computer processor chip. He holds three of nine PC patents for being the co-creator of the IBM personal computer released in 1981. In 1995, Dean was named the first ever African-American IBM Fellow. In August 2011, writing in his blog, Dean stated that he now uses a tablet computer instead of a PC.
Dean is the [one of the?] first African-Americans 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. He was elected to the National Academy of Engineering in 2001.