I used T flip flops here, but really they could represent any kind of logic no matter how complex. The key is we expect the same output from them. In fact, there’s no reason each one has to get ...

Here’s another entry in the 7400 Logic contest. [Circuitchef] used gates and a few flip-flops to build a two-player electronic Tic-Tac-Toe game. The full details or shared in the PDF file he ...