Multiple choice

Which of the following devices selects one of several inputs and transmits it to a single output?

  1. Decoder

  2. Multiplexer

  3. Demultiplexer

  4. Counter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A multiplexer selects one of multiple input lines and connects it to a single output line based on control signals. This is its defining function - data selection from multiple sources to one destination. Decoders do the opposite (one input to multiple outputs), demultiplexers distribute one input to multiple outputs, and counters count sequentially.

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