I've got to agree with Sidewinder. PCs became part of my life (they were called microcomputers in those days) in the early '80s. The Internet may have existed then, but only as a set of links between some universities (and possibly only in the US at that stage). At least I missed out on the punched cards:) We all wanted to learn BASIC, because it was great for games.
But at a more basic level, PCs only enabled people to do the things they were doing already - faster, or perhaps in a slightly different way. The Internet enables people to do different things. And that seems to be more significant.
I voted for cellphones as the most annoying. Not because of all the people in libraries who yell down their phone, "I'm in the library! Shout!" (Brits will know who this is.) Though I've got to admit that that's pretty annoying. What really annoys me about them is that every three weeks you've got to switch your provider or some oher thing, in order to get the best deal on costs. It's as bad as gas and electricity.
MG