Breaking IT news: #Microsoft just open-sourced MS-DOS 4.0. Versions 1.25 and 2.0 had already been open-source (MIT License) since 2018. If you’ve ever used DOS in the 1990s, you most likely were using v5.0 or v6.x. Those later versions likely won’t be released as open-source due to third-party restrictions.
Fifty years of the PC operating system… a historic look at the contributions of pioneer Gary Kildall and his CP/M operating system to the #PersonalComputer revolution. I go back to this period, and am so there for any tributes to Kildall who IMO deserves a lot of credit for his vision and early contributions. Plus, he was just an awesome guy. #RetroComputing#ComputerHistory#OperatingSystems#OS#CPM#GaryKildall