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The function of a multiplexer is

  • A.to decode information
  • B.to select 1 out of N input data sources and to transmit it to single channel
  • C.to transit data on N lines
  • D.to perform serial to parallel conversion

Answer: B

Correct answer: to select 1 out of N input data sources and to transmit it to a single channel

A multiplexer is a data selector: the control lines choose one of its inputs and connect it to the single output. The reverse operation - one input to one of many outputs - is the demultiplexer.

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