# What is 2-input NAND gate?

## What is 2-input NAND gate?

A NAND gate is made using transistors and junction diodes. By De Morgan’s laws, a two-input NAND gate’s logic may be expressed as AB=A+B, making a NAND gate equivalent to inverters followed by an OR gate. The NAND gate is significant because any boolean function can be implemented by using a combination of NAND gates.

## What is symbol of NAND gate?

The symbol of the NAND gate is represented as a combination of AND gate and NOT gate. The Boolean expression is given as Y=¯A. B. ….Symbol and truth table of NAND gate.

A B Y
1 0 1
1 1 0

What is NAND gate Shala?

The NAND gate is a combination of an AND gate and NOT gate. It is also called Negated And gate. The NAND gate provides the false or low output only when their outputs is high or true.

### What is the symbol of OR gate?

The logic or Boolean expression given for a digital logic OR gate is that for Logical Addition which is denoted by a plus sign, ( + ) giving us the Boolean expression of: A+B = Q.

### What are the symbols of NAND AND XOR gates?

NAND: The Boolean expression for the NAND gate is: Y=¯A⋅B. XOR: the Boolean expression for the XOR gate is: Y=ˉA⋅B+A⋅ˉB. XNOR: the Boolean expression for the XNOR gate is: Y=A⋅B+ˉAˉB.

Can NAND have 3 inputs?

As with the AND function seen previously, the NAND function can also have any number of individual inputs and commercial available NAND Gate IC’s are available in standard 2, 3, or 4 input types. If additional inputs are required, then the standard NAND gates can be cascaded together to provide more inputs for example.

## What is NAND gate Class 11?

In digital electronics, a NAND gate which is a negative-AND gate, is a logic gate which produces an output which is false only if all its inputs are true. Thus its output is complement to that of the AND gate.

## Which of the following represents NAND function?

Representation of a NAND gate: NAND gate is a universal gate. Hence, the correct option is B.

Why NAND and NOR gates are called universal gates?

Answer: The NAND & NOR gates are called universal gates because they perform all the logical operations of basis gates like AND, OR, NOT. Answer: NOR AS AND An AND gate gives a 1 output when both inputs are 1; a NOR gate gives a 1 output only when both inputs are 0.

### What is Boolean expression in logic gates?

Boolean expression is A+B (“A or’ d with B”) Logic expression: Input variable are A,B and the output variable is Y, then the logic expression for OR gate is Y = A+B.

### What type of logic gate does this symbol represent?

The symbol is an EXOR gate with a small circle on the output. The small circle represents inversion. The NAND and NOR gates are called universal functions since with either one the AND and OR functions and NOT can be generated.

How to make a NAND gate?

– Use both inputs; output is XOR – Tie the inputs together; output is 0 – Tie one input high; output is inverse of other input (inverter) – Tie one input low; output is same as other input (buffer) – Tie the output to one input; output probably oscillates or is 1

## Can you use a NAND gate with a single input?

You can have as many inputs as you like. A NAND gate is nothing but an NPN transistor at the end for each input and another one to control the output if you will. You can increase the number of inputs by adding one more transistor to the circuitry.

## What is the truth table for a NAND gate?

The truth table of the NAND gate is given below: From the truth table of the gate, it is clear that all the inputs must be high to get a low output and if any of the input is low, the output obtained will be high. If any one of the input is also high the output will be high that is 1.

Why NAND and NOR gate are called universal gate?

There are two universal gates in the digital logic. They are NAND gate and NOR gate. If these gates are fabricated properly other basic gates can be constructed easily. For this reason they are called universal gates.As they are easy to fabricate and economical ,these gates are popularly used.