The Central Control Computer controlled the Trade Federation Droid Army. As early as 3951 BBY, the droid control center on the Visionary controlled thousands of droids, on Nar Shaddaa and elsewhere. Before the Invasion of Naboo, the Trade Federation used battle droids that were all subject to the Central Control Computer. This computer, located on an orbiting command ship or station, allowed the droid control program to instantly relay information and orders from unit to unit no matter where they were on the planet.