Isopods have 7 pairs of legs all pretty much the same length.
74** logic gates have ... 7 pairs of legs all the same length!
Coincidence? I think not!
Clearly, each isopod contains 4 logic gates. This Armadillidium vulgare has 4 AND gates. Don't forget to connect power & ground legs & use pull-down resistors on inputs.
(best practice is to simply ask the rollie to position itself in your circuit.)
Like most natural systems. they use micro-voltages, don't use standard 5V power sources.
