How well do you know your logic gates? For their final submission for STEM Projects class, [BKriet] gamified the situation using a Raspberry Pi Pico, some blinkenlights, and a not-insignificant ...

He observes that the price of the ATtiny20, $0.53 last Fall, was cheaper than the equivalent logic gates he needed. This particular chip is also quite small — only 3 mm square (a 20-pin VQFN).

Reversible circuitry: A logic gate circuitry is reversible if, the total number of inputs and the total number of outputs are equivalent to each other, and the one-to-one accord is present between all ...