Universal Gates – Digital Electronics

There are two combination circuit or gates are known as universal gates. Because any gate including basic gates ( NOT, AND, OR) and any combination of the basic gates can make by these two gates. Two gates are

1. NAND Gate: Combination of AND and NOT
2. NOR Gate: Combination of OR and NOT

Basic Gates using NAND Gate

NOT Gate
AND Gate
OR Gate
NOR Gate

Basic Gates using NOR Gate

NOT Gate
AND Gate
OR Gate
NAND Gate