Historical Artifact      

Basic programming language

First Microsoft product:  Altair Basic

The assembly language source (8086) of Altair Basic

An article describing Microsoft Basic (defunct now)

Wiki microsoft basic

Microsoft Basic original source code in 6502 assembly language

Recent development

Gates, Bill (2 April 2025). "Celebrating 50 years of Microsoft with the company's original source code". GatesNotes. Retrieved 29 August 2025.

(with animation, worth visiting)

....

last update 25 March 2026