Found this via Game, Set, Watch. Talk about something I hadn't thought about in years, this was my favorite book as a youngster. It's still pretty cool today as a piece of retrofuturism. (Speaking of, I had a dream about Disney's Space Mountain last night, back when RCA was still sponsoring it.)
Looking at this book now, the interesting thing to me is all the handheld and tabletop games in it. At the time, I assumed many of these were made up as I'd never seen them. Well, in the time since then, I think I've seen every one of those somewhere.
I also still love the diagram of how a computer works with all the little robots running information around. Way cool.