[dayglored]

I would agree that your memory, as well as the story that professor told, are pretty much at odds with the historical facts.

Microsoft was born to produce BASIC for the ALTAIR computer in 1975-76. The company bought XENIX (UNIX) and sold that as an operating system. Then IBM approached Microsoft to produce a CP/M-like operating system for the new IBM-PC (1981). Microsoft bought QDOS from Seattle Computers, rebranded it as MS-DOS, and licensed it to IBM as PC-DOS. It wasn’t until after the Apple Macintosh came out in 1984 that Microsoft recognized the value of a graphical environment, so they produced Windows in 1985. They eventually sold XENIX to concentrate on Windows, and worked with IBM to produce OS/2, ....

... and the story goes on from there...

[Abby4116]

I remember OS/2. Could not get it to load properly on my 286 Packard Bell. Think I still have it stashed away. Went from Win 3.1 to 95 etc. with no problems.

Yes, I did use Windows 1 but it was easier to just use DOS.