Mark Dean was born on March 2nd, 1957 in Jefferson City. As a young adult he took an interest in Computer Science. His most famous collaboration was making one third of the personal computer (PC). For his help in building the PC, Mark Dean won the IBM fellow award after giving the patent to them in 1981. One of his smaller inventions was made more recently being the first 1-Gigahertz chip, a revolutionary computer processer with record speed.