Integrated Circuits Used 74LS32 74LS02 Procedure Add IC 74LS32 into ICBase-1 (74LS32).Add IC 74LS02 into ICBase-2 (74LS02).Connect GND Port to Pin-7 (Ground) of ICBase-1 (74LS32).Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS32).