I have yet to see a definitive date for the creation of MS-DOS. This is just the date QDOS was purchased.
I run a public "Geeky Events" calendar[1] and the research I've done points to August 12th as the first date "MS-DOS" was created, but even that isn't 100%. Does anyone know the actual date?
[1]: https://www.google.com/calendar/b/0/embed?src=9t07jqib63if4k...