Integrated Circuits Used 74LS00 74LS76 74LS04 Procedure Add IC 74LS00 into ICBase-1 (74LS00).Add IC 74LS76 into ICBase-2 (74LS76).Add IC 74LS76 into ICBase-3 (74LS76).Add IC 74LS04 into ICBase-4 (74LS04).Connect Pin-20 (VCC) of ICBase-4 (74LS04) to VCC Port.