In a half-adder circuit, what are the outputs?
2024
In a half-adder circuit, what are the outputs?
Answer: A. Sum and Carry — A half-adder is a combinational arithmetic circuit that adds two single-bit binary numbers (A and B). It produces two specific outputs to account for the…
- A.
Sum and Carry
- B.
Difference and Borrow
- C.
Sum and Difference
- D.
More than one of the above
- E.
None of the above
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Correct answer: A
A half-adder is a combinational arithmetic circuit that adds two single-bit binary numbers (A and B). It produces two specific outputs to account for the results of binary addition:
Sum (S): This represents the "least significant bit" of the addition. It is implemented using an XOR gate, following the logic:
0 + 0 = 0
0 + 1 = 1
1 + 0 = 1
1 + 1 = 0 (with a carry)
Carry (C): This represents the "most significant bit" or the overflow. It is implemented using an AND gate, appearing only when both inputs are 1 (1 + 1 = 10 in binary).