"Kabuterimon's Electro Shocker"

Still in the desert, we found a strange factory.  We looked around in it for people, but no one was there.  Upon closer examination, however, we found Andromon, and he atacked us.  Izzie found a computer code, and when he accidentally change the coe, it made Tentopmon digivolve into Kabuterimon.  With the help of Greymon and Garrurumon, Kabuterimon destroyed the black gear inside Andromon.  But what are these black gears, anyway?