Uses of multiplexer in digital electronics book pdf

A 4 to 1 multiplexer uses 2 select lines s0, s1 to determine which. Spring 2011 ece 301 digital electronics 21 using a 2ninput multiplexer use a 2ninput multiplexer to realize a logic circuit for a function with 2n minterms. One of these data inputs will be connected to the output based on the values of selection lines. Demultiplexers take one data input and a number of selection inputs, and they have several outputs.

The world of electronics was initially dominated by analogue signalsthat is, signals representing a continuous range of values. They forward the data input to one of the outputs depending on the values of the. This book is licensed under a creative commons attribution 3. This lab manual provides an introduction to digital logic, starting with simple gates and building up to. Multiplexer is a crucial combinational circuit which is used in various significant application. The single pole multiposition switch is a simple example of nonelectronic circuit of multiplexer, and it is widely used in many electronic circuits. Electronicsmultiplexers wikibooks, open books for an. Electronics tutorial about the multiplexer mux and digital multiplexers used in. Ee4512 analog and digital communications chapter 7 if the data sources have different rates a multiplexer scheme must reconcile the disparate rates. It is a combinational circuit which have many data inputs and single output depending on control or select inputs. Kaushik and others published digital electronics find, read.

The multiplexer mux the operation of sending one or more analog or digital. Multiplexing and demultiplexing logic functions for computing. So, each combination will select only one data input. It is a combinational digital circuit and generally called a data selector as well. Prerequisites a basic idea regarding the initial concepts of digital electronics is enough to understand. A multiplexer takes compatible audio and video and sometimes subtitles, chapter lists and combines them into one file. Multiplexer is a combinational circuit that has maximum of 2 n data inputs, n selection lines and single output line. We can refer to a multiplexer with the terms mux and mpx too. This training board gives a better this training board gives a better understanding.

J hoolan, in telecommunications engineers reference book, 1993. We can have n control bits to select from 2n input bits. In this lesson we will study digital multiplexing in. The selected line decides which ip is connected to the op, and also increases the. Chapter 3 explains about the concept of data processing circuits like encoder, decoder, multiplexer. The reverse of the digital multiplexer is the digital demultiplexer. Multiplexing circuits are called multiplexer or mux. The multiplexer is used to perform highspeed switching and is constructed by electronic components multiplexers are capable of handling both analog and digital applications. For analog application, multiplexer are built of relays and transistor switches. Multiplexers and demultiplexers digital electronics wiley online. An electronic multiplexer can be considered as a multipleinput, singleoutput. A flip flop is an electronic circuit with two stable states that can be used to store binary data. The term multiplexing can have multiple interpretations.

Multiplexing is the generic term used to describe the operation of sending one or more analogue or digital signals over a common transmission line at different times or speeds and as such, the device we use. Laboratory manual digital systems and logic design. Flipflops and latches are fundamental building blocks. This is in contrast to analog electronics and analog signals digital. Although they appear similar, they certainly perform di. The multiplexer is a very useful electronic circuit that has uses in many different. So what exactly are digital circuits and why should we care about them. A multiplexer is a device that brings the concept of a rotary switch in analog electronics to the digital side. Multiplexers can select data input lines as per our requirement. The multiplexer is one of the most important components in communications networking. An important class of electronic circuits is made of digital ones. Multiplexers and demultiplexers are often confused with one another by students.

Spring 2011 ece 331 digital system design 30 using a 2ninput multiplexer use a 2ninput multiplexer to realize a logic circuit for a function with 2n minterms. Digital circuits contain a set of logic gates and these can be operated with binary values, 0 and 1. It is a device which, based on some input, will change the connection of its other inputs to its. One of these data inputs will be connected to the output based on the values of selection. Electronics tutorial about the multiplexer mux and digital multiplexers used in combinational logic circuits for the multiplexing of data. Aims to familiarise students with combinational logic circuits sequential logic circuits how digital logic. A multiplexer is a circuit used to select and route any one of the several input signals to a signal output. Multiplexer mux and multiplexing tutorial electronicstutorials.

For digital application, they are built from standard logic gates. Multiplexers are also known as data n selector, parallel to serial convertor, many to one circuit, universal logic circuit. In the digital electronics, the binary decoder is a combinational logic circuit that converts the binary integer to the associated pattern of output bits. Digital multiplexer or data selector is a logic circuit that has several input lines and a single output line. Introduction to digital logic with laboratory exercises. This chapter explains how to use number system such as binary.

An simple example of an non electronic circuit of a multiplexer is a single pole multiposition switch. The book digital electronics contains twelve chapters with comprehensive. Since all input variables are complemented in this expression, we can directly derive the pullup network as having parallelconnected pmos transistors controlled by x1 and x2, in series with parallel. Use the multiplexer to implement complex logical functions. In this lesson we will study digital multiplexing in which the number of inputs is a power of two 2, 4, 8, 16, and there is one output.

Combinational logic has many uses in electronic systems. In the following article we will discuss the construction and operataion of multiplexer and demultiplexer in detail. Digital electronics part i combinational and sequential logic dr. It also consists of data selector switch w hich is used to. Since a multiplexer s job is to select one of the data input lines and send it to the output, it is also known as data selector. Physically, a multiplexer has n input pins, one output pin, and m control pins. Different types of encoder and decoder and its uses. In most cases a digital multiplexer is a digital selector. In electronics, a multiplexer also known as a data selector, is a device that selects between several analog or digital input signals and forwards it to a single output line. Based on your tags, im guessing youre talking about audiovideo files. Gates are used as the building blocks in the design of more complex digital logic circuits. The stored data can be changed by applying varying inputs. In analog applications, multiplexers are made up of of.

What are the uses of multiplexer, demultiplexer, encoder. Digital logic is the basis of electronic systems, such as computers and cell phones. A digital device capable of selecting one input out of its multiple input lines and forwarding it on a common output line is called a multiplexer. Digital electronicsasychronous devicedigital multiplexer.

Multiplexer handle two type of data that is analog and digital. In electronics, a multiplexer or mux is a device that selects one of several analog or digital input signals and forwards the selected input into a single line. Digital electronics part i combinational and sequential. Multiposition switches are widely used in many electronics circuits.

Foundation of digital electronics and logic design index of. Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. Here the basic concept of mux is explained with truth table and circuit is also designed. Sdram receives its address command in two address words. In simple words, it is the reverse of demultiplexer demux. Pdf digital electronics basic principles and design. Since digital logic uses binary values, powers of 2 are used 4, 8, 16 to. Examples of solved problems for chapter3,5,6,7,and8. Since there are n selection lines, there will be 2 n possible combinations of zeros and ones. Multiplexer encoders demultiplexers and decoders application.

Pdf handwritten digital electronics made easy study. A multiplexer or mux is a device that has many inputs and a single output. For n input lines, log n base2 selection lines, or we can say that for 2 n input lines, n selection lines are required. They can be used to keep a record or what value of variable input, output or intermediate.

Digital multiplexer 8bitcomputer logic training board has been designed specifically for the study of digital multiplexer. A multiplexers mux is a device that allows digital information from several sources to be routed onto a single line. Multiplexer data selectordigital electronicsenglish. The single pole multiposition switch is a simple example of non electronic circuit of multiplexer, and it is widely used in many electronic circuits. Digital logic is rooted in binary code, a series of zeroes and ones each having an opposite value. In digital circuitry, however, there are only two states. Pdf this book consists of four chapters and is intended as the. In other words, the rotary switch is a manual switch that you can use to select. A multiplexer of 2n inputs has n select lines, which.