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Parallel adders are

  • A.combinational logic circuits
  • B.sequential logic circuits
  • C.both (a) and (b)
  • D.None of these

Answer: A

Correct answer: combinational logic circuits

A parallel adder's outputs depend only on the bits currently present at its inputs - it holds no state and needs no clock, which is the definition of a combinational circuit. Sequential circuits are those whose output depends also on what has gone before.

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