Q.

If A and B are the inputs of a half adder, the carry is given by                      

A. a and b
B. a or b
C. a xor b
D. a ex-nor b
Answer» A. a and b
Explanation: if a and b are the inputs of a half adder, the carry is given by: a(and)b, while the sum is given by a xor b.
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