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Digital ElectronicsMultiplexers & Demultiplexers

How many select lines are required for a 16-to-1 multiplexer?

  • A2
  • B3
  • C4
  • D16
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Correct Answer: C. 4
Explanation: A 2^n-to-1 multiplexer requires n select lines. Since 16 = 2^4, four select lines are required.
Reference: Standard digital electronics: multiplexers
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