# Drive XOR using `either `

NAND gates or NOR gates.

From Digital Basics section we know the equations for XOR and NAND gates. The equations are also shown below.

#### Table below lists truth tables of `NAND`

, `NOR`

and `XOR`

.

Input A | Input B | NAND | NOR | XOR |
---|---|---|---|---|

0 | 0 | 1 | 1 | 0 |

0 | 1 | 1 | 0 | 1 |

1 | 0 | 1 | 0 | 1 |

1 | 1 | 0 | 0 | 0 |

**First** Lets drive XOR gate using only NAND gates.