RIP Clive Sinclair.
He did more to get people into computing than probably any other person with his ZX models. Take his little keyboard thingy, hook it up to a B&W portable TV and a single deck mono cassette and off you went. Along with a magazine called Everyday Electronics you could have a bouncing ball game, ping-pong, bombs dropping from the top of the screen that you had to catch, a sort of etch-a-sketch thing and, of course, a typewriter (word processor). Basic was the language but it was amazing what you could do with it and the ZX Spectrum's 48k of RAM.
I also had one of his little TV's. It was a battery drainer but it still worked up to the digital age.
The other thing about the ZXs, Commodores, Amigas and BBC-Bs was that there was a large group of 'tinkerers' who either added to the main boards or who produced some sorts of 'peripherals' to extend them. Instructions were in EE and you could get the bits form Farnell or Maplin.
We have come a long way in a little over 40 years.