A full-adder circuit can be constructed using which combination of logic circuits?

Options

  • A. Two half-adders and one OR gate
  • B. Two half-adders and one AND gate
  • C. One half-adder and one NOT gate
  • D. Two OR gates and one NOT gate
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. Two half-adders and one OR gate

Detailed Explanation

Correct Answer: (A) Two half-adders and one OR gate
A full-adder can be constructed using two half-adders and one OR gate. The first half-adder adds A and B; the second adds the first Sum and Carry-in. The OR gate combines the two carry outputs.
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BPSC Tre 4.0 Digtial Electronics Quiz Practice Set 1

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