I'd consider it valid to think of "PC" as being "Personal Computer" when it's a home machine (too unwieldy to wander around outdoors with), and "PC" maybe = "Po

I'd consider it valid to think of "PC" as being "Personal Computer" when it's a home machine (too unwieldy to wander around outdoors with), and "PC" maybe = "Portable Computer" or "Pocket Computer" when dealing with the average smartphone, tablet, laptop, netbook, e-reader, etc, since they're all computers. Definitely don't mean "Windows" computer though. Where's the letter "P" in "Windows"?