Page 75 - Handout Digital Electronics
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Figure 12: Full Adder Logic Circuit
The Boolean expressions for implementing the Full Adder are derived from the truth table for example:
Cout = CinBA + CINBA + CinBA + CinBA
= CinBA + CinBA + CINBA + CinBA
= BA(C IN + CIN ) + CIN(BA + BA)
= BA + Cin (B A)
Sum = CinBA + CinBA + CINBA + CinBA
= Cin (B A) + Cin (BA + BA)
= Cin (B A) + Cin (B A)
= Cin B A = Cin A B
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