Integrated Circuits Used 74LS86 74LS83 Procedure Add IC 74LS86 into ICBase-1 (74LS86).Add IC 74LS83 into ICBase-2 (74LS83).Connect GND Port to Pin-7 (Ground) of ICBase-1 (74LS86).Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS86).