[transfire]

I think an Atari computer of the era had such a keyboard though.

[cmrdporcupine]

The Atari 400, which was the lower end model. The 800 had a real keyboard.

[Cockbrand]

Not to forget the Sinclair ZX80 and ZX81, marketed in the US by Timex. Sinclair at least had the sense to assign each BASIC command to a single keystroke.