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LOGIC GATES

THE 'NAND' GATE

Logic Gates        Main

The symbol used when showing an AND gate in a logic circuit is shown as follows:

The NAND gate works like a combination of the NOT gate and the AND gate, With an NAND gate you need to have both X input AND the Y input to be 1s so that the output becomes 1. Then it being a NAND it NOT's (inverts) the output, making the output now 0

 Truth Table

X       Y       X OR Y
0       0          1
0       1          1
1       0          1
1       1          0