Implementation and Testing of Universal, Reversible Fredkin Gates

This article presents the implementation of Fredkin gates using standard Transistor-Transistor-Logic (TTL) integrated circuits (ICs), and their testing with an Arduino Uno microcontroller board. The correct functionality of the implementation is demonstrated by manual testing, by automated testing with an Arduino Uno microcontroller board, and by automated testing via a C# program (running on the host computer) interacting with a C++ Sketch running on the Arduino board.