This is a cool video from Bell Labs (1968) that explains the basics on how computer works and whether they can think of not. Forty years later we can see how the principles apply, the challenges are the same - but a lot of progress has been made on all these fronts. Very well made.
Ben Heckendorn, famous for making all sorts of crazy mods, has published his latest: A Commodore64 laptop. I remember what the portable Commodore64 looked like in the eighties and first learned to program on a Commodore64 so the nostalgia factor is high on this one.