Quote:
Originally Posted by tlgerdes
By my count, Windows 7 should have been Windows 9
1) Windows 1
2) Windows 2/2.1/286
3) Windows 3/3.1x
4) Windows 95
5) Windows 98
6) Windows 2000/ME
7) Windows XP
8) Windows Vista
9) Windows 7
10) Windows 8
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95/95/ME are essentially the same OS kernel, so should be counted as one. Actually, this one is even questionable since they (and Win 1, 2, 3...) were just a GUI running on top of DOS
2000 and XP actually run a proper multitasking kernel, dubbed by Microsoft as "New Technology" (or Never Tested in IT circles in the early days). From a code point of view, very very different from earlier releases.
IIRC, Win 7 reports itself as NT 6.1
Mac OS X releases are similarly valid as X=10 since the architecture of the kernel hasn't fundamentally changed since its initial release, it's been largely UI, aesthetic and hardware architectural changes (PPC->x86). OS X was actually preceded by OS 9, 8, 7...