Working of AND Gate in computers

What is an AND Gate?

An AND gate is a logic gate having two or more inputs and a single output. An AND gate operates on logical multiplication rules. In this gate, if either of the inputs is low (0), then the output is also low. If all of the inputs are high (1), then the output will also be high. An AND gate can have any number of inputs, although 2 input and 3 input AND gates are the most common.

There are two binary digits – 0 and 1. We just told that an AND gate performs a binary multiplication of binary digits. In multiplying 0 with 0 we will get 0, 1 with 0 or 0 with 1 we will get 0. Only we get 1 when 1 is multiplied by 1.

Input AND Gate

If instead of two inputs there are three inputs, this changes the logical symbol and truth table of the AND gate.

The logical symbol of a 3-input AND gate is represented as:

The truth table of a 3 input AND gate is: