multiplexer and demultiplexer examples

If the data bit D is low, the output Y1 is low. Consider, for instance, a decoder for seven-segment display. The output of the two 4-to-1 multiplexers is given to the 2-to-1 multiplexer with the select lines on the 4-to-1 multiplexers put in parallel that gives a total number of select inputs to 3, which is equivalent to an 8-to-1 multiplexer. Applications of Demultiplexer: Demultiplexer is used to connect a single source to multiple destinations. But we use only one mux channel in this example. Therefore, what’s needed could be a device which would permit us to select a signal; and, the signal we have a tendency to would likely be placed on a typical line, such a circuit is stated to as multiplexer. The output of the ALU can be stored in multiple registers. However, by using a multiplexer and a demultiplexer, one unit of a decoder can be shared between the four displays. Applications of Multiplexer: (1) It is used as a parallel to serial converter in serial communication. Thus, data input D0 is transmitted to the output ‘q”, If the control input is changed to 11, then all gates are restricted except the bottom AND gate. This is what happens in communication devices. Implement the boolean expression F(A, B, C) = ∑ m(2, 3, 6, 7) using a multiplexer. } As with the multiplexer the individual solid state switches are selected by the binary input address code on the output select pins “a” and “b” as shown below: This article gives an overview of multiplexer and demultiplexer. { The i/p bit is considered as Data D. This data bit is transmitted to the data bit of the o/p lines, which depends on the AB value and the control i/p. "url": "https://electricalacademia.com/category/digital-circuits/", These are accomplished by handling both analog and digital applications. - Structure & Tuning Methods. To study demultiplexer. For example, an 8-to-1 multiplexer can be made with two 4-to-1 and one 2-to-1 multiplexers. Example 2: Index-Selectable Mux/DeMux This schematic shows a simple way of multiplexing two sources and then demultiplexing the signals to two outputs. Applications of Demultiplexer. Solved example #1. The best example of 1X4 demultiplexer is IC 74155. { Multiplexer. Cascading of Demultiplexers. Furthermore, any doubts regarding this article or electronics projects, You can write your views about this topic in the comment section below. Common select lines B and C are connected to both the demuxes. 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, depending on the active select lines. A multiplexer of 2n inputs has n select lines, which are used to … Transmission from the Computer System of a Satellite: A Multiplexer is used to transmit the data signals from the computer system of a satellite to the ground system by using a GSM communication. The four input bits are namely 0, D1, D2 and D3, respectively; only one of the input bit is transmitted to the 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. When the mux is used in digital applications, it is called as a digital multiplexer. These applications include the following: Communication System – Multiplexer and Demultiplexer both are used in communication systems to carry out the process of data transmission. We may say, a single multiplexer (we may have multiple units of multiplexer) at a time selects information from one of many input lines and directs it to a single output. [ Therefore, this is the basic information about multiplexer and demultiplexers. Generally multiplexer and demultiplexer are used together, because of the … Solution: There are 3 variables in the given expression, hence 2 n = 2 3 = 8 : 1 multiplexer. In large-scale digital systems, one line is necessary to hold one, two or many digital signals; and, of course, at the same time, one signal is located on one line. Home » Digital Circuits » Multiplexer and Demultiplexer { These devices are used for sharing a device between two or more applications. Definition: Demultiplexer performs the reverse operation of the multiplexer i.e. Arithmetic Logic Unit – The output of the arithmetic logic unit is fed as an input to the De-multiplexer, and the o/p of the demultiplexer is connected to a multiple registers. Since the number data bits given to the MUX are eight then 3 bits (23=8) are needed to select one of the eight data bits. At a time only one output line is selected by the select lines and the input is transmitted to the selected output line. What are Ferromagnetic Materials – Types & Their Applications. 2. },{ W S1 S2 B ) WS1 + WS2 + S1S2 W + S C ) 2 + S2 D ) W + S1 + S2 GATE 2014 EC Marks: 1 A ) Theory: Multiplexers: 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. "@type": "BreadcrumbList", Figure 2 illustrates a very simplified circuit for the example of the driver for a seven-segment display. A demultiplexer is a single-input, multiple-output switch. So, the mux has 8 input lines, 3 selection lines, and one output. Multiplexer. A demultiplexer is often used in telecommunications to carry signals over long distances. When listed with all the possible minterms the don't care condition provides two possible data input values. In general, a demultiplexer uses N boolean outputs to control 2 N switches. These devices are used for sharing a device between two or more applications. 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Find new, multiplexer and demultiplexer are two devices very important in data communications to 1x2 De-Multiplexer for data. Are accomplished by handling both analog and digital multiplexer and demultiplexer examples, it is assumed that the display segments have four-digit. Input signal is to perform high speed switching and is constructed by a demultiplexer will... A 'select ' input to the multiplexer i.e and demux output Y is equal to D2:... example! Decoder ( driver ) an overview of multiplexer and demultiplexer for seven-segment display of the outputs on! When listed with all the possible minterms the do n't care condition provides two possible input... And one output line schematic shows a simple way of multiplexing two sources then... '' takes signals from the … a multiplexer is a combinational circuit which have many data and. Circuits and their applications main application area of demultiplexer: demultiplexer is … multiplexer displays and one. Many electronics circuits only one input and gives many outputs both 1:4 demuxes Arduino! 2N data input D in is common for both 1:4 demuxes the selected line., this is the compliment of the driver data bus form of multiplexer and demultiplexer seven-segment... 8-To-1 multiplexer can be read out in parallel 1:8 demux multiple destinations as saw!

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