The OR and XOR Gates

The OR gate is also a two-input, single-output gate. Unlike the AND gate,

the output is 1 when one input, or the other, or both are 1. The OR gate

output is 0 only when both inputs are 0.

A	B	Q=A AND B
0	0	0
0	1	1
1	0	1
1	1	1

A related gate is the XOR, or eXclusive OR gate, in which the output is 1

when one, and only one, of the inputs is 1. In other words, the XOR output

is 1 if the inputs are different.