This is a summary of basic logic gates with logic circuits, and a truth table of the next gates: NOT, OR, AND, NOR, NAND, XOR, and XNOR.  All the logic gates have 2 inputs (A, B) and 1 output (Out), except NOT gate that has 1 input (In) and 1 output (Out).

The inputs in each gate (A, B) can be 0 or 1, and the users can change (0 to 1 or 1 to 0)  the value, with a click on each small box of each input.

The output in each gate (Out) has connected a red led to signal if the output is 1 or 0 (1 is red led, 0 is led without color).