PC software pioneer Gary Kildall created CP/M in 1974By David LawsGary Kildall at the first West Coast Computer Faire in the San Francisco Civic Auditorium in 1977. [CHM Object ID: 500004174 © Tom Munnecke/Hulton Archive/Getty Images]PC software pioneer Gary Kildall created CP/M in 1974Gary Kildall demonstrated CP/M, the first commercially successful personal computer operating system in Pacific Grove, California, in 1974. Following is the story of how his company, Digital Research Inc., establi...