Microsoft Windows 1.0 was unveiled 40-years-ago today by Bill Gates during a special event in New York City’s Helmsley Palace Hotel. The official release didn’t come until November 20, 1985, more than 2-years later. This operating system runs on MS-DOS as a 16-bit shell program known as MS-DOS Executive, providing an environment capable of running graphical programs designed for Windows, as well as existing MS-DOS software.
Windows 1.0 introduced multitasking, the use of the mouse, and various built-in applications such as Calculator, Paint, as well as Notepad. The windows are tiled in the operating environment to prevent them from overlapping. When .exe files are opened, an application window is launched in MS-DOS Executive. Did you know that Puzzle and Chess were supposed to appear as playable video games? Microsoft scrapped the idea and instead commercially published Reversi, also known as Othello. Initially, Microsoft promised to ship Windows by April 1984, but various design modifications caused its release date to be pushed back.
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