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Statement (I): The multiplexer is essentially an electronic switching device which enables each of the inputs to be sampled in turn. Statement (II): A multiplexer is a circuit that is able to have inputs of data from a number of sources and then, by selecting an input channel, gives an output from just one of them.

Statement (I): The multiplexer is essentially an electronic switching device which enables each of the inputs to be sampled in turn. Statement (II): A multiplexer is a circuit that is able to have inputs of data from a number of sources and then, by selecting an input channel, gives an output from just one of them. Correct Answer Both Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

Concept:

  • A multiplexer is a circuit that is able to have inputs of data from a number of sources and then, by selecting an input channel, give an output from just one of them.
  • In applications where there is a need for measurements to be made at a number of different locations, rather than use a separate analog to digital converter (ADC) and microprocessor
  • The multiplexer is essentially an electronic switching device that enables each of the inputs to be sampled in turn. 

Working of Multiplexer:

  • Analog inputs from the sensors are accessed through a multiplexer.
  • A typical board might have 8 or 16 analog input channels.
  • An analog to digital converter then converts the amplified sampled signal to a digital signal.
  • The control element can be set up to control the multiplexer so that each of the inputs is sequentially sampled or perhaps samples are taken at regular intervals or perhaps just a single sensor signal is used.

From the above explanation, we can say that both statement (I) and statement (II) are individually true and statement (II) is the correct explanation of statement (I).

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