Historical Operating System Transitions

Significant shifts in operating system dominance that changed how users interact with personal computing devices.

The top 3

1. Microsoft's Windows Evolution: The transition from MS-DOS to the graphical user interface of Windows 95 fundamentally shifted computing to mass-market appeal.
2. Apple's macOS X Migration: Apple's transition from Mac OS 9 to Mac OS X in 2001 abandoned legacy architecture for a modern, Unix-based foundation.
3. Mobile Shift to Android: Google's acquisition and subsequent dominance of the Android platform redefined the mobile operating system landscape since 2008.

Sources

• Computer History Museum

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