74381 4-bit 8-function arithmetic logic unit (ALU) +----------+ A1 |1 +--+ 20| VCC B1 |2 19| A2 A0 |3 18| B2 B0 |4 17| A3 S0 |5 74 16| B3 S1 |6 381 15| CIN S2 |7 14| /P F0 |8 13| /G F1 |9 12| F3 GND |10 11| F2 +----------+ [This information is part of the GIICM]