Figure P6.1.39 shows a full adder with the idea of adding Ci to the partial sum S' , which is the same logic process as addition with pencil and paper.
(a) Draw the truth table for the full adder.
(b) Add decimal numbers A = 7 and B = 3 in binary form, showing the values of A, B, S', C' o, Ci, C"o, and S for each pair of bits.