Question

Design XNOR gate using NAND gate.
$Y=\overline{A\oplus B}=\overline{A.}\overline{B}+A.B$

Answer 1

XNOR gate is a digital logic gate that has two inputs and one output, both the inputs are the same, also called equivalence gate. NAND and NOR gates are referred to as universal gates. To Design XNOR gates using NAND gates we need to know the basics of NAND gates and XNOR gates.

Complete answer:
An XNOR gate circuit is not made from four NOR gates. XNOR operation is represented by a dot that is surrounded by a circle. XNOR is not called an exclusive NOR gate which is a combination of an XOR gate followed by an inverter. XNOR is a Logic gate that can be used in cutting-edge microprocessor, error detecting circuits. Its main use is in arithmetic circuits and encryption circuits. Logic gates are basic for constructing all digital systems. The basic logic gates are AND gate, OR gate, and NOT gate and there are some more logic gates that are derived from basic logic gates which are the NAND gate & NOR gate. The plus symbol is used to indicate the OR operation. NOT gate produces negative inputs also called inverted. The NAND gate is a NOT & AND circuit that is equal to the AND circuit and is followed by NOT. NOR gate is a combination of NOT and OR which is equal to OR circuit followed by NOT. There are two types of flash memory which are NOR and NAND which get differentiated by the arrangement of data. NAND has high storage capacity and it is cost-effective. NAND gates are more durable than any magnetic form of storage. NAND flash memory is replaceable only with any compatible component. NAND memory is basically used in the place where data can be frequently erased and can easily replace large files such as digital cameras. NAND memory is a form of electronic erasable programmable read-only memory which is represented as EEPROM.

Note: NAND and NOR gates are internally made up of transistors. Logic gates are mathematical representations of physical quantity. Logic gates are the building block of all computers, smartphones and the internet. Alarm switch, doorbell switch, temperature detector these are some common examples of logic gates.