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Digital ElectronicsMultiplexers & Demultiplexers

A 32-to-1 multiplexer requires how many select lines?

  • A4
  • B5
  • C6
  • D32
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Correct Answer: B. 5
Explanation: Because 32 = 2^5, five select bits uniquely select one of 32 inputs.
Reference: Standard digital electronics: multiplexer selection
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