Simple Logic Gates Simulator

Simple Logic Gates is a tool with which you can create and model your own logic block circuits. You can experiment with connecting gates and other logic elements to simulate how they work, and then use them in other programs, games, and calculations to get a general idea of how they work.

There are all the main logic elements here:

AND, OR, XOR, NAND, NOR, XNOR, button, switch, timer.