Define the NAND gate and write its Boolean expression.

A NAND gate combines an AND gate and a NOT gate. A NAND gate has two inputs and contains only a single output Boolean Expression of NAND gate is Y= A.B

What input(A, B) is fed to the NAND gate for which the output (Y) is low (0)?

If input (A=1 and B= 1) is fed to the input of the NAND gate, the output Y = 0

If both inputs (A, B) are shorted, two input NAND gates behave like which logic gate?

If both inputs are shorted, the NAND gate behaves like a NOT gate.

Which set of logic gates are designated as universal gates?

NOR and NAND gates work as universal logic gates.

On what basis does the logic gate's function works?

Logic gates working is based on the flow of electric current.

Photoelectric EffectJEE MathsJEE Chemistry

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NAND gate

NAND Gate

In digital circuits, logic gates are the basic building blocks of electronic circuits and integrate circuit technology. Digital devices like laptops and smartphones use binary bits to perform mathematical operations. The base of digital electronics is general logic gates: OR, AND, and NOT. By using combinations, various logic gates can be generated. Combinations of these gates make a NAND gate, also known as a Sheffer stroke. By using a NAND gate, complex functions can be processed efficiently. A NAND gate combines an AND gate and a NOT gate.

1.0Define NAND Gate

A NAND gate combines an AND gate and a NOT gate. It is obtained by combining the output of an AND gate with the input of a NOT gate. The truth table of the NAND gate can be obtained by determining the negation of its output.

2.0NAND Gate Description

A NAND gate typically has two inputs, denoted as A and B. The output Y of a NAND gate is shown below:

Y = 1 when A = 0 and B = 0.
Y = 0 when A = 1 and B = 1
Y = 1 when A = 0 and B = 1
Y = 1 when A = 1 and B = 0

A NAND gate has two inputs and only a single output; the number of inputs can be increased according to need. It is a reciprocal of an AND gate. The output will be high if any one of the inputs is low. The NAND gate is a Universal gate.

3.0NAND Gate Examples

Security system
Construction of Flip Flops, latches, multiplexers
Sensors connected to windows and doors
Automatic Water Monitoring System
Barcode Scanner

4.0Logical Symbol of NAND Gate

The symbol is the same as the AND gate but with a small circle at the output. The small circle indicates the NOT or INVERTER operation.

5.0Boolean Expression for NAND Gate

$Y = \overline{A . B}$

6.0Truth Table of NAND Gate

7.0NAND Gate Circuit Diagram Using Diode

8.0Advantages of NAND Gate

Low power consumption
Universal logic gate
It easily simplifies logical expression

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