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electronics and communication engineering digital electronics
1. For a binary half subtractor having two inputs A and B the correct sets of logical expressions for the outputs D (A - B) and X = Borrow are
(A): D = A B + AB , X = A B
(B): D = A B AB , X = AB
(C): D = AB + A B , X = AB
(D): D = AB + A B, X = A B
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