Ahh, the good old days! The ZX81 had a keyboard, just not a very good one. Go back a few years, the KIM-1 and my MEK6800D2 kit had hexadecimal keypads, which were a big step above the microcomputers (and the DEC PDP-11 minicomputers and others I’m sure) that had binary toggles for each bit.
And some magazines had programs on floppy vinyl “disk” inserts. You would play them on your record player (phonograph), feeding the speaker output into your microcomputer’s cassette input.
PC used to mean any personal computer. And then along came IBM who confiscated the acronym for its own computers.
