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 ...

These flip-flops are designed in a Y shape with ... Those amplifiers are what allow for what we think of as logic gates. Of course, they aren’t very fast, but they are very robust compared ...