Which Boolean expression represents the Borrow output of a half-subtractor?

Options

  • A. A AND B
  • B. A XOR B
  • C. A' AND B
  • D. A OR B
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. A' AND B

Detailed Explanation

Correct Answer: (C) A' AND B
For a half-subtractor, Borrow = A' · B. A borrow is required when the minuend A is 0 and the subtrahend B is 1.