It's an educational board. I made a custom educational board for my kid a few years back (with a 16 bit digital CPU though) just to have something physical, wit

It's an educational board. I made a custom educational board for my kid a few years back (with a 16 bit digital CPU though) just to have something physical, with the possibility to be underclocked to extreme values and a bunch of LEDs in key points to illustrate the principle. I could have used an emulator, but something like that is 1000x better as it's bare metal and doesn't have any black magic under the hood.