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