File Name: multiplexer and demultiplexer in dld .zip
De-Multiplexer is a combinational circuit that performs the reverse operation of Multiplexer. The input will be connected to one of these outputs based on the values of selection lines. So, each combination can select only one output. De-Multiplexer is also called as De-Mux. The block diagram of 1x4 De-Multiplexer is shown in the following figure.
To understand the operation of a multiplexer and demultiplexer. To design basic multiplexer. Primarily they are used for data routing which selects a transmission path for outgoing data according to the coding criteria established by binary inputs. Figure 5. The inputs and output are drawn as wide arrows rather than lines; this indicates that they may actually be more than one signal line. Figure 4. It takes a single input and distributes it over several outputs based on the selector.
These take on or more data inputs and generate a single output. To create 4x1 MUX we need two select bits and four input bits. This is how a multiplexer will implement an XOR gate. Unlike the general design, the system you design will work only for from 0 to 0 numbers so you should use only 0 bits as input. Incidentally, some authorities spell this multiplexor, but multiplexer is the predominant spelling. Your mux should have only 1 output line. Logisim provides an easy-to-use graphical environment, enabling students to solve their homework assignments related to designing and simulating digital circuits.
Mark A. Strain , PE. Course Outline. Digital circuits have been incorporated into everyday life. Life would definitely be different without their existence. Digital logic is the fundamental basics of computer design. This course will explain some of the fundamental building blocks of logic design.
In electronics , a multiplexer or mux ; spelled sometimes as multiplexor , also known as a data selector , is a device that selects between several analog or digital input signals and forwards the selected input to a single output line. A multiplexer makes it possible for several input signals to share one device or resource, for example, one analog-to-digital converter or one communications transmission medium , instead of having one device per input signal. Multiplexers can also be used to implement Boolean functions of multiple variables. Conversely, a demultiplexer or demux is a device taking a single input and selecting signals of the output of the compatible mux , which is connected to the single input, and a shared selection line. A multiplexer is often used with a complementary demultiplexer on the receiving end. An electronic multiplexer can be considered as a multiple-input, single-output switch, and a demultiplexer as a single-input, multiple-output switch. One use for multiplexers is economizing connections over a single channel, by connecting the multiplexer's single output to the demultiplexer's single input.
The major factor that differentiates multiplexer and demultiplexer is their ability to accept multiple input and single input respectively. The multiplexer also known as a MUX operates on several inputs but provide a single output. As against demultiplexer also known as DEMUX simply reverses the operation of MUX and operates on single input but transmits the data to multiple outputs. It is noteworthy here that multiplexer acts as data selector thus provide a single output from several inputs. However, demultiplexer acts as a data distributor and generates several outputs with a single input. We will discuss some other major differences between MUX and DEMUX but before that have a look towards the contents to be discussed under this article.
Digital design using mux - demultiplexer in digital logic design book pdf free download as powerpoint presentation. Ppt , pdf file. Pdf , text file. Txt or view presentation slides online. Scribd is the world' s largest social reading and publishing site.
One of these data inputs will be connected to the output based on the values of selection lines. So, each combination will select only one data input. Multiplexer is also called as Mux.
Speed is fast. The first level of 16 AND gates computes the individual partial products. Digital logic circuits can be classified into two types: combinational and sequential.
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