Integrated Circuits Used 74LS08 Procedure Add IC 74LS08 into ICBase-2 (74LS08).Connect Output-2 to Input-3.Connect VCC Port to GND Port.Connect Pin-7 (Ground) of ICBase-2 (74LS08) to Input-4.Connect Output-3 to Pin-20 (VCC) of ICBase-2 (74LS08).