Xerox might argue with that. The phrase "personal computer" was around in 1970, and the Alto (http://en.wikipedia.org/wiki/Xerox_Alto) was released in 1973.

http://blinkenlights.com/pc.shtml discusses a variety of personal computer milestones, sadly also disagreeing that "Apple literally invented the personal computer".

Down vote if you find what I'm saying factually wrong.

-- signed, someone who lives in a household with 2 rMBPs, an iPhone 6, 5S, 2 iPad Airs, and an iMac.