Building a Circuit From a Truth Table
S = A’B’Cin + A’BCin’ + AB’Cin’ + ABCin
Cout = A’BCin + A B’Cin + ABCin’ + ABCin
= A’BCin + ABCin + AB’Cin + ABCin + ABCin’ + ABCin
= BCin + ACin + AB
= (A’ + A)BCin + (B’ + B)ACin + (Cin’ + Cin)AB
= 1·BCin + 1· ACin + 1· AB
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