Logic Gates

BY SEBASTIAN THOMAS

NOT Gate

Input A Output P

A P

0 1

1 0

A not gate only has 1 input. 1 or a 0. In a NOT gate the input is not the output. The output is always the opposite of the input.

AND Gate

Input A

Output P

Input B

A B P0 0 01 0 00 1 01 1 1

In an AND gate there are 2 inputs. Input A and Input B both have to be the same for the same output. If they are different it will be 0 (off).

OR GateInput A

Output P

Input B

A B P0 0 01 0 10 1 11 1 1

The OR gate also has 2 inputs. Input A or B has to be 1 for the output to be 1.