Two and a half decades ago today, Bill Gates unveiled Microsoft's first operating systems. Oh, it wasn't for sale yet—no, no, it's still only 1983 and we wouldn't see Windows on store shelves until 1985. But that didn't stop the young heart throb Gates.
Gates wasn't at all shy when promoting his debut Windows OS at New York's Helmsley Palace Hotel that day, claiming that it, powered by a unique graphical interface, would be running 90% of IBM systems by 1984 (before missing the launch date by a year, of course). To his credit, that ridiculously lofty number is just about identical to the Windows marketshare of today.
Windows 1 wouldn't be around for long, with its Windows 2 predecessor following just two years later. But if you have a fond memory of the old OS, now would be a good time to share it with the class in the comments. [Wired and image]