Integrated Circuits Used 74LS00 Procedure Add IC 74LS00 into ICBase-3 (74LS00).Connect Pin-7 (Ground) of ICBase-3 (74LS00) to GND Port.Connect VCC Port to Pin-20 (VCC) of ICBase-3 (74LS00).Connect Input-0 to Pin-1 (Input) of ICBase-3 (74LS00).