Inventor, Computer Programmer
Mark notice early on in life that he had inherited the success of his bloodline. As a bright and energetic child, he often heard the concern his classmates and teachers had about his knowledge, they didn’t realize a black child could be so smart. Mark was a straight A student and an outstanding high school athlete. His success continued in college as he graduated at the top of his class with a Bachelor of Science in Electrical Engineering from the University of Tennessee in 1979.
In 1980, Dean was invited to join IBM as an engineer. Despite his new position, he continued his education and received a Master’s Degree in Electrical Engineering from Florida Atlantic University in 1982. In his capacity as an engineer for IBM, he didn’t take long to make a big impact, serving as the chief engineer for the team that developed the IBM PC/AT, the original home/office computer. Along with his colleague Dennis Moeller, he developed the Industry Standard Architecture (ISA) systems bus, a component that allowed multiple peripheral devices such as a modems and printers to be connected to a PC, thus making the PC a practical and affordable component of the home or small business office. Dean would own three of the original nine patents that all PCs are based upon. Dean followed up with PS/2 Models 70 or 80, and the Color Graphics Adapter (which allowed for color display on the PC).