In most of the electronic system the digital data is available on more than one line. The output gets connected to only one input at a time. The multiplexer act like a digitally controlled single pole, multiple way switches. It is generally on active low terminal that means it will perform the required operation when it is low. E is called as the strobe or enable input which is useful for cascading. Depending on the digital code applied at the select inputs, one out of the n data sources is selected and transmitted to a single output. To select n inputs we require m select lines, such that 2 m =n. The selection of one of the n inputs is done by the select lines. It is a digital circuit which selects one of the n data inputs and routes it to the output. Multiplexer: Multiplexer is a special type of combinational circuit. ![]() ![]() This is '4:1 Multiplexer & 1: 4 De-multiplexer' assignment of
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