Altair Basic was developed by Gates, fellow Microsoft co-founder Paul Allen, and programmer Monte Davidoff. The trio reportedly coded “day and night for two months” in 1975.

Ahead of Microsoft's 50th anniversary this week, co-founder Bill Gates has released the company's original source code. Gates and Paul Allen wrote it in BASIC using a PDP-10 mainframe at Harvard ...

Ahead of Microsoft's 50th anniversary this week, co-founder Bill Gates has released the company's original source code. Gates and Paul Allen wrote it in BASIC using a PDP-10 mainframe at Harvard ...

In the 1970s, Gates and his Microsoft co-founder, Paul Allen, used a computer in Harvard's lab to compose what he calls the 'coolest code I've written.' It's now public for the first time.