Neat! I was going through this during a few years after I had just gotten a handed down ZX81 from a relative some time around 1984, at the age of 7 or so. I sti

Neat! I was going through this during a few years after I had just gotten a handed down ZX81 from a relative some time around 1984, at the age of 7 or so. I still remember that this relative sold the computer to my parents for 400 SEK (~$40). Pretty good "investment" in my career, I've gotta say. (They also, while not being super well paid as municipal workers also sprung for two more computers for me - one 8086 PC in ~89 and one 80486 PC in ~93. So thankful. These things were so expensive back then, probably at least 1.5x a monthly salary after taxes.)