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Even worse transgression: no mention of the Commodore 64, the best-selling single computer model of all time, and which occupies a very large part in some of the linked diagrams http://jeremyreimer.com/postman/node/329 - it was basically the only thing really ever competing numerically with the IBM PC.
Still, I wonder how much the numbers used for those graphs are skewed for North American market - apparently ( http://en.wikipedia.org/wiki/ZX_Spectrum ), the Spectrum family sold 5+ million units not counting clones; considering that C=64 sold ~15 million, Speccy should be easily visible on the graph & much more than "Other".
Oh, and no mention of the Amiga, the sign of things to come WRT multimedia for the masses.
But what really surprises me is that you, MOS6510, didn't grumble about those two omissions