not necessary FPGA but can be re-writable: see
I am not good in that hardware emu branch but my guess is that they pick something that can drive and matches original clock speed as the old programmable rom was no longer produced. (the antique people would buy old broken ones and rip parts off them or try to restore them.)
From look at the board, basically it looks like they did the “hardware” emu approach. But people I know that enjoy retro stuff they either want the look(original or replica case/keyboard, but internal is more modern that runs software emu) or they want the antique(functional original). It’s pretty rare to see these kinda of hardware emu where they bundle chips as close to old ones while trying to replicate how the old hardware work and then drive with another modern board for the input/output.
As long as they are still sending out flyers with stuff you buy you are okay. Also, if you already knew the price range of your regularly shopped goods, you know something is off. Superstore is already using digital tags. And you can just pull out your phone and take pictures.
Lastly, it should be put into law so you can’t increase price during the day. Going down is fine, but no going down and then going up again for peak hour. Stores can set whatever price they want to sell before opening. (for those non-regulated things)
It’s the end point modem+router. It’s like saying removing the landline phone from people’s house without destroy the exchange boxes would cripple communication. It’s not cause they are easily replaced.
Thanks for letting me know about this logic table thing, that explains my question when younger why some old computers had massive array of same components put together.
ps. my first computer was a 80286 knock off. By the time I get to high school(basically 80386 era) that have a computer tech club where member bring their old computer parts to share, they are mostly no longer functional. I basically donated my old 80286’s 20MB hard drive for tear down and that’s first time me and other member see what it looks like inside a hard drive.