This is the symbol and the truth table for the 'AND' gate. The AND gate is an electronic cercuit that gives a high output only if all its inputs are high.
This is the symbol and the truth table for the 'OR' gate. The OR gate is an electronic circuit that gives a high output (1) if one or more of its inputs are high.
This is the symbol and truth tabel for the NOT gate. The NOT gate is an electronic circuit that produces an inverted version of the input at its output. If the input variable is A, the inverted output is known as NOT A.
This is the symbol and truth gate for the NAND gate. This is a NOT-AND gate which is equal to an AND gate followed by a NOT gate. The outputs of all NAND gates are high if any of the inputs are low.
This is the symbol and truth table for the NOR gate. The '
Exclusive-NOR' gate circuit does the opposite to the EOR gate. It will give a low output if either but not both, of its two inputs are high.
