Microsoft's co-founder Bill Gates commemorates its 50th birthday by sharing the BASIC interpreter code that led to its creation.

Gates and Allen tackled the challenge by latching onto the BASIC computer language that had been developed in 1964 at Dartmouth College, but they still had to figure out a way to make the ...

The Altair BASIC source code is available as a PDF download, covering 157 pages. Gates is “super proud of how it turned out,” and considering what Altair BASIC led to, he should be.