Logic gates are electronic circuits that have one or more inputs and a single output. They are also known as logical circuits or logical gates. Logic gates are composed of basic electronic components such as diodes and transistors. Circuits with input and output lines operate based on specific logic. In short, logical circuits utilize Boolean functions to process the data received from the input and produce logical results.

There are various types of logic gate circuits based on their functionality. These circuits are formulated using logic gate symbols. Generally, there are three basic types of logic gates used in circuit design. These are:

AND Gate
OR Gate,
NOT Gate.

However, the set of gates available to us is not limited to these. Additionally, there are four more gates that we have developed:

NAND Gate,
NOR Gate,
XOR Gate,
XNOR Gate.

Below, we present a table that illustrates whether these gates operate with a single bit or multiple bits

Gate Type	Single Bit Operations	Multiple Bit Operations
NOT Gate	Yes	No
AND Gate	No	Yes
OR Gate	No	Yes
NAND Gate	No	Yes
NOR Gate	No	Yes
XNOR Gate	No	Yes
Identity Gate	Yes	No

Table 1. Gates operate with a single bit or multiple bits