NAND Gate
Very similar and basic tp the AND gate. It only differs in the final output. The NAND outputs are exactly the opposite of the AND gate. This is achieved by using a NOT at the output of the AND.
NOR Gate
This too is very basic to the OR gate. The only difference is that the NOR gate inverts the final output, this is achieved by using a NOT gate at the output.
Exclusive OR Gate ( XOR )
The XOR gate is a combination of AND and OR gates.
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