The TRS 80 home computer, USA, 1978. In these thrilling advertisements, a man does the household budget (on paper, while looking at the numbers on the screen) and some kind of prepubescent Oedipal classroom psychodrama is played out through the medium of multiplication tables.

Basically it’s a jumped-up pocket calculator, only much less convenient.

Don’t worry, puritans of America, you can’t do anything fun or interesting with these computers!