The NOR gate output is only 1 if neither input A NOR input B is 1.

The NOR gate output is only 1 if neither input A NOR input B is 1.

A transistor NOR gate. its truth table and symbol
A transistor NOR gate. its truth table and symbol

Two more logic gates (Fig. 45.23) are useful in processing inputs. The AND gate
does just as the name implies.

The output of an AND gate is 1 only if inputs A AND Bare 1.
The NAND gate is the inverse of the AND.
The NAND gate output is 1 unless both its inputs are 1

The AND and NAND gates. their truth tables and symbols
The AND and NAND gates. their truth tables and symbols
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