From whom did Bill Gates purchase the program that became MS/DOS and created the basis of Microsoft's success?

I need that question answered for and assignment that is do tonight can anyone help me Name one powerful database that moved from use by the FBI to the business community. 2. From whom did Bill Gates purchase the program that became MS/DOS and created the basis of Microsoft's success? 3. Fred Smith, founder of FedEx, talks about a time of being "an inch within failure" with his company. What time period is he referring to, and what were the top three risks he faced? 4. Who is the most interesting person in the world?..More on This Topic.....