@tubetime I'd never heard of these until a recent YT video by 8-bit Guy. I don't even remember seeing them in the electronics I poked around in when I was a kid. I guess they were pretty spendy to make as they hadn't had a chance to scale production much, so they didn't make it into a lot of stuff. But, wow, what a cool lil dude. If semiconductors weren't a thing, we could've eventually had Pip Boys instead of smart phones (probably wouldn't have been very "smart" though).