Before Micro Soft became Microsoft, Bill Gates wrote BASIC interpreters. Microsoft's first shipping operating system was a Unix distro called Xenix . Then, in 1980, Microsoft got its shot at the big time: IBM needed an operating system for its planned IBM PC and asked Gates if he could deliver one. You betcha! The rest is history. Now, Microsoft has released the source code and notes for PC DOS 1.00 , the first DOS release for the IBM PC. Also: Microsoft's incredible rise, 15...
