B3 S3 COUT CIN GND B0 A0 S0 16 15 14 13 12 11 10 .
ETC
SN7483 - 4-BIT BINARY FULL ADDER W/FAST CARRY
B3 S3 COUT CIN GND B0 A0 S0 16 15 14 13 12 11 10 9 Adder A3 B3 CO3 CI3 S3 Adder A2 B2 CO2 CI2 S2 Adder A1 B1 CO1 CI1 S1 Adder A0 B0 CO0 CI0 S0 .