In digital electronics, a multiplexer is a combination of logic gates resulting into circuits with two or more inputs data inputs and one output. As the name implies, their functions are opposite to each other similar to encoder and decoder. John crowe, barrie hayesgill, in introduction to digital electronics, 1998. Multiplexer mux data selectordigital electronicsenglish. In these types below, the timedivision multiplexer is more complex, and the digital multiplexer is. This will allow the digital video system to display the output of the multiplexer as though it were itself a video camera. Multiplexer is a combinational circuit that has maximum of 2 n data inputs, n selection lines and single output line. 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. Here the basic concept of mux is explained with truth table and. Multiplexer is a combinational logic circuit which allows only one input at a particular time to generate the output. Since there are n selection lines, there will be 2 n possible combinations of zeros and ones. An electronic multiplexer can be considered as a multipleinput, singleoutput switch, and a demultiplexer as a singleinput, multipleoutput switch.
Multiplexers, or muxs, can be either digital circuits made from high speed logic gates used to switch digital or binary data or they can be analogue types using. Multiplexer handle two type of data that is analog and digital. Multiplexers are mainly used to increase the amount of data that can be sent over the network within a certain amount of time and bandwidth. Multiplexer and demultiplexer are two devices very important in data communications. The select lines determine which input is connected to the output, and also to increase the amount of data that can be sent over a network within certain time. Few types of multiplexer are 2to1, 4to1, 8to1, 16to1. Computer science be able to understand and build state machines. In electronic devices, a demultiplexer is a logical circuit which takes a single input and sends out this input to one of several outputs. J hoolan, in telecommunications engineers reference book, 1993. The book digital electronics contains twelve chapters with comprehensive. Digital electronics part i combinational and sequential.
The basic concept is that a multiplexer makes it possible for many different and generally independent streams of data to share the same electronic pathway, be. But in electronic circuit which involves high speed switching and data transfers. Multiplexer mux and multiplexing tutorial basic electronics. Multiplexers can be used as lookup tables to perform logic functions. Mux sends digital or analog signals at higher speed on a single line in one. Digital electronics part i combinational and sequential logic dr. Any other input combination means the output from the gate is always 0. These signals can either be a digital signal or an analog signal. Digital circuits demultiplexers demultiplexer is a combinational circuit that performs the reverse operation of multiplexer. Multiplexer and demultiplexer is a combinational of digital logic switching. A multiplexer is often written as mux in the abbreviated form.
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. In most cases a digital multiplexer is a digital selector. 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 to do just that is called a multiplexer. An electronics multiplexer will select an output by a digital code. Multiplexer is a device that has multiple inputs and a single line output. We can have n control bits to select from 2n input bits. The mc14052 is an analog multiplexer meaning the input pins can also be.
These devices are used for sharing a device between two or more applications. Multiplexers are also known as data n selector, parallel to serial convertor, many to one circuit, universal logic circuit. One of these data inputs will be connected to the output based on the values of selection lines. A multiplexer of 2 n \displaystyle 2n inputs has n \displaystyle n select lines, which are used to select which input line to send to the output. The selection of the channel to be read into the output is controlled by supplying a specific digital word to a different set of inputs select inputs. An simple example of an non electronic circuit of a multiplexer is a single pole multiposition switch. The definition is slightly different when we are talking about demultiplexers in the context of networking. Balasubramanian multiplexer data selectordigital electronicsenglish. Demultiplexers take one data input and a number of selection inputs, and they have several outputs. An electronic multiplexer can be considered as a multipleinput, single output switch, and a demultiplexer as a singleinput, multipleoutput switch.
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