Page 76 - Handout Digital Electronics
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To add binary numbers with four or more bits the Full Adder must be cascaded, for example to add two
four –bit binary numbers the full adder must be cascaded four times.
Figure 13 cascaded full adder
Assume A = A3A2A1A0 = 0101 and B = B3B2B2B1 = 1111
S0 = 0 C0= 0; S1 = 0, C1 = 1; S2 = 1, C2 = 1; S3 = 0; C3 = 1.
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