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A comparison between serial and parallel adder reveals that serial order

  • A.is slower
  • B.is faster
  • C.operates at the same speed as parallel adder
  • D.is more complicated

Answer: A

Correct answer: is slower

A serial adder handles one bit pair per clock, so an n-bit addition takes n clock periods. A parallel adder presents all bits at once and completes in a single propagation delay. The serial adder is simpler and smaller, which is the trade it makes.

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