well, if you get literal a PC is a Personal Computer, so, technically, a mac running os x, aside from a "server" is a PC.

I think, over the years, the term PC has been badly misused and doesn't really even have a true definition... Apple is trying hard to say that the Mac is not a PC, and use that to their advantage, and before that, it was used as a disadvantage towards Apple. However, I think the terms PC and Mac will slowly disappear and everything will be called something else, maybe just a computer, I dunno.
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