Integrated Circuits Used 74LS05 74LS02 Procedure Add IC 74LS05 into ICBase-3 (74LS05).Add IC 74LS02 into ICBase-2 (74LS02).Connect GND Port to Pin-7 (Ground) of ICBase-2 (74LS02).Connect Pin-7 (Ground) of ICBase-3 (74LS05) to GND Port.
