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digital electronics combinational logic circuits
1. Two 4-bit binary numbers (1011 and 1111) are applied to a 4-bit parallel adder. The carry input is 1. What are the values for the sum and carry output?
(A): 4321 = 0111, Cout = 0
(B): 4321 = 1011, Cout = 1
(C): 4321 = 1100, Cout = 1
(D): 4321 = 1111, Cout = 1
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