R

Rakesh Kumar • 28.44K Points
Instructor II

Q. Which one of the following statements is not correct ?

  • (A) A full adder can be constructed using two half-adders and an OR gate
  • (B) Two four bit parallel adders can be cascaded to construct 8-bit parallel adder
  • (C) Ripple carry adder has addition time independent of the number of bits
  • (D) Carry look ahead is used to speed up the parallel addition
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