Why are NAND Gates used?

Hint:The Logic gates are used to perform logical operations using single or multiple binary inputs and one binary output. The input and output of a gate are supported by certain logic, which is explained using Boolean logic. Boolean logic uses only two variables zero or one.

Complete answer:
The foremost basic sort of logic gates is OR circuit, AND circuit and NOT gate. Additionally, to the fundamental gate, there are combination gates like NAND Logic Gate, NOR gate, XOR gate, etc. made by combining basic logic gates in several ways.
NAND gate is widely used as it is called the universal gate. We can make any circuit by using the combination of NAND Gate. NAND Gate is widely used from our storage devices to our microprocessors, even Brands like Intel and Samsung prefer NAND gate as it is a universal gate and any gate can be made using the combination of just NAND gate which is itself a combination of two gates.
Our storage devices such as SSD (Solid State Drives) that we use in our PC and laptops are made up of NAND gates and hence there are also called NAND Drive.
The Boolean expression given for a NAND circuit is that of logical addition and it's opposite to AND Gate
The NAND gate has a symbol as shown below.


Note:
In digital electronics NAND gate is a combination of two gates. NAND gate consists of NOT + AND gate. This type of gate gives negative or low output only if all the inputs are high. The logic NAND function is given by the Boolean expression \[Y=\bar{A}+\bar{B}\]. Here A, B are the inputs and Y is that the output