![]() ![]() Sel is a 2-bit input and can have four values. A 4-bit multiplexer would have N inputs each of 4 bits where each input can be transferred to the output by using a select signal. The MUX itself acts like a digitally controlled multi-position switch where the binary code applied to the select inputs controls the data input, which will be switched to the output.įor example, it transfers data from one of the N inputs to the output based on the select signal. Mechanical switches or rotary switches are made using rotating shafts.Analog multiplexers are made using transistors.Digital multiplexers are made up of logic gates.There are three main ways of constructing a multiplexer. 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 a data selector. Physically, a multiplexer has n input pins, one output pin, and m control pins. It decides which input line to switch using a control signal. It switches between one of the many input lines and combines them one by one to the output. It allows us to squeeze multiple data lines into one data line. Multiplexers are used in communication systems to increase the amount of data sent over a network within a certain amount of time and bandwidth. We refer to a multiplexer with the terms MUX and MPX. ![]() A multiplexer is a device that selects one output from multiple inputs. ![]()
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