Integrated Circuits Used 74LS05 Procedure Add IC 74LS05 into ICBase-1 (74LS05).Connect GND Port to VCC Port.Connect Input-14 to VCC Port.Connect Pin-7 (Ground) of ICBase-1 (74LS05) to GND Port.Connect Pin-20 (VCC) of ICBase-1 (74LS05) to Output-0.