Generally, the selection of each input line in a multiplexer is. This can be done in a number of ways: Set the Source Select Input in properties. The multiplexer is a combinational logic circuit designed to switch one of several input. The output will go high when its respective input is selected. If one of the variables (for example, D) is also available inverted, a multiplexer with n-1 selector inputs is sufficient the data inputs are connected to 0, 1, D, or ~ D, according to the desired output for each combination of the selector inputs. A logic input select to choose between a predetermined number of inputs. The variables are connected to the selector inputs, and the function result, 0 or 1, for each possible combination of selector inputs is connected to the corresponding data input. Any Boolean function of n variables and one result can be implemented with a multiplexer with n selector inputs. Multiplexers can also be used as programmable logic devices, to implement Boolean functions. Output is open collector and same as input Since digital logic uses binary values, powers of 2 are used (4, 8, 16) to maximally control a number of inputs for the given number of selector inputs.įor 7400 series part numbers in the following table, 'x' is the logic family. The LES instruction is used to test whether one value is another. Other common sizes are 4-to-1, 8-to-1, and 16-to-1. The NEQ is true when the stored in the tag specified as source A is not equal to either the data stored in the tag specified as source B or a constant entered in source B. The selection is directed by a separate set of digital inputs known as select lines.

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. Like a multiplexer, it can be equated to a controlled switch.

Logic no input source selected