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NAND Gate: A NAND gate can be created by first using an AND gate to perform the logical AND operation on two inputs, and then applying a NOT gate to the output of the AND gate. The expression for a NAND gate is:
F=A⋅B‾F = \overline{A \cdot B}, which means the output is the negation of the AND result. -
NOR Gate: A NOR gate can be created by first using an OR gate to perform the logical OR operation on two inputs, and then applying a NOT gate to the output of the OR gate. The expression for a NOR gate is:
F=A+B‾F = \overline{A + B}, which means the output is the negation of the OR result.