You guessed it, diodes can also be used to build logic gates, but not all of them, only the AND and OR gates can be built using diodes only. However, by adding a transistor as an active element ...

Bipolar is characterized by use of (non-insulated gate) transistors and most often associated with Transistor Transistor Logic (TTL) based logic levels. As CMOS technology came of age and got ...

Box 1: Criteria for practical optical logic. The electronic transistor and the logic gates based on it have qualitative features that are crucial for systems of any complexity, but very few ...