XOR gates make nifty oscillators too, from AF to HF. PotatoSemi (yes, potato chip) makes GHz speed 7400 series equivalents. It would be fun to see what logic at such levels could make possible for RF.

As an electronics rookie, one of the first things they tell you when they teach you about logic gates is, “You can make everything from a combination of NAND gates”. There usually follo… ...