launched the ZX81 in 1981, as a follow-up to the ZX80. The
& blue casing of that machine was replaced with the now
black ABS casing, reminiscent
of earlier Sinclair products, and was again designed by Rick
Dickinson. Originally supplied in kit form by mail-order
introduced a generation - myself included - to programming, and trying
to get the most out of that 'huge' 1K of RAM.