+---+--+---+ A4 |1 +--+ 16| B4 S=A+B+CIN S3 |2 15| S4 A3 |3 14| COUT B3 |4 13| CIN VCC |5 7483 12| GND S2 |6 11| B1 B2 |7 10| A1 A2 |8 9| S1 +----------+
+---+--+---+ A4 |1 +--+ 16| B4 S=A+B+CIN S3 |2 15| S4 A3 |3 14| COUT B3 |4 13| CIN VCC |5 7483 12| GND S2 |6 11| B1 B2 |7 10| A1 A2 |8 9| S1 +----------+