Integrated Circuits Used 74LS08 74LS32 74LS86 74LS00 Procedure Add IC 74LS08 into ICBase-1 (74LS08).Add IC 74LS32 into ICBase-2 (74LS32).Add IC 74LS86 into ICBase-3 (74LS86).Add IC 74LS00 into ICBase-4 (74LS00).Connect GND Port to Pin-20 (VCC) of ICBase-3 (74LS86).