The VIC-20 was the first computer to sell a million units. It was advertised by William Shatner as "the wonder computer of the 1980s" and sold in toy shops and department stores, in a cream case shaped like the later C64's.
With so little memory, many games came on cartridges, and plenty of owners bought memory expansions.
A narrow screen of 22 characters across, so its pixels were wide and its letters big. There were 16 colours, but each character square could have only one of the first eight as its own colour, on a shared background. Graphics were made by redefining characters, as there were no sprites.
Three square-wave voices, each in its own range of about three octaves (low, middle and high), a noise voice and one volume control for all of them.