NAND gate
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| INPUT | OUTPUT | |
| A | B | A NAND B |
| 0 | 0 | 1 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
The NAND gate is a logic gate used to build digital logic circuits. Given two inputs, A and B, A NAND B will be true if at most one of A and B is true. In other words, A NAND B is false if both A and B are true, and true otherwise. The NAND gate is a "universal gate."
[change] Symbols
There are three symbols for NAND gates: the 'military' symbol and the 'rectangular' symbol. For more information see logic gate symbols.
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'distinctive shape' NAND symbol, also that used by US ANSI
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'Military' NAND symbol, also that used by DIN
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'Rectangular' NAND symbol, used by IEC
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