Microsoft’s first brush with the Vista effect

Turning to technology, on this day in 1988, Microsoft released DOS 4.0. It introduced many advances, including “extended memory” (allowing programs to use memory beyond one megabyte), mouse support, and a shot at a graphical interface.

Unfortunately, the OS also contained a startling number of bugs

Microsoft squashed many bugs with the release of DOS 4.01, but many companies (including the one I did technical support for way back then), skipped DOS 4.x entirely. Instead, they held onto DOS 3.x (after all, it worked just fine…) and didn’t start replacing things until DOS 5.0 (and ultimately DOS 6.0) hit the market.


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