Integrated Circuits Used 74LS83 74LS132 Procedure Add IC 74LS83 into ICBase-2 (74LS83).Connect GND Port to Pin-16 (Ground) of ICBase-2 (74LS83).Connect VCC Port to Pin-5 (VCC) of ICBase-2 (74LS83).Add IC 74LS132 into ICBase-3 (74LS132).