Multiplexer Questions and Answers Quiz

How many types of multiplexers are mentioned in the text?

What formula is used to determine the number of select pins in a multiplexer?

In designing a 4x1 MUX using the function FA,B,C=∑(0,1,4,7), how many select pins are required?

When designing a 4x1 MUX using a K-map, which variables are put in the select pin?

If a function is given as F(A,B,C,D)=∑(0,2,5,7,8,10,13,15), how many select pins would be needed to design a MUX?

What is the purpose of a multiplexer circuit?

How many select inputs are required for a multiplexer with 16 data inputs?

In the given example of implementing a three-input XOR using a 4-to-1 multiplexer, which of the following is true?

What is the purpose of a demultiplexer circuit?

In the given example of realizing a 4-to-1 multiplexer using 2-to-1 multiplexers, how many 2-to-1 multiplexers are required?

Which of the following statements about multiplexers is true?

Multiplexer

A multiplexer circuit has multiple data inputs, one or more select inputs, and one output.
The number of data inputs (n) is an integer power of two.
A multiplexer with n data inputs requires [log2 n] select inputs.

Realizing Multiplexers

A 4-to-1 multiplexer can be realized using three 2-to-1 multiplexers.
A 16-to-1 multiplexer can be realized using 4-to-1 multiplexers.

Synthesis of Logic Function using Multiplexers

A multiplexer can be used to implement a logic function.
The implementation can be optimized by minimizing the number of inputs.

Implementing Logic Functions using Multiplexers

A three-input XOR function can be implemented using a 4-to-1 multiplexer.
Multiplexers can be used to implement various logic functions, such as those described in the examples.

Demultiplexer (Data Distributer)

A demultiplexer performs the reverse operation of a multiplexer, distributing a single input to multiple outputs.
A demultiplexer can be implemented using a truth table, such as the one shown for a 1-line to 4-line demultiplexer.

Types of Multiplexers

The type of multiplexer is determined by the number of data inputs (m) and select inputs (n), where m = 2n.
Examples of multiplexers include 2x1, 4x1, and 8x1 multiplexers.

Designing Multiplexers using Functions

To design a multiplexer using a function, the number of select pins is equal to (number of variables - 1).
The most significant variable is used in the select pin.
The last variable is used as the input to the multiplexer.

Designing Multiplexers using K-Maps

K-Maps can be used to design multiplexers, such as 4x1 and 8x1 multiplexers.
The variables are placed in the select pins and the inputs are determined using the K-Map.

This quiz covers the basics of multiplexer circuits, including the number of data inputs, select inputs, and how to implement larger multiplexers using smaller ones. It includes examples and solutions on how to realize different multiplexer configurations.