Aha! Gotcha! Now you think that I actually know what I'm doin'!
SCADA: Supervisory Control and Data Acquisition
DCS: Distributive Control System
PLC: Programmable Logic Controller
All that "stuff" means is that multiple processes that are running plant wide can actually be controlled and managed from a central plant control room. The controllers and controlled equipment are controlled from one designated control room. The control room may have from 1 to 15-20 computer screens with touch pad capability to allow for the remote changing of set points, opening valves, start/stop motors, etc, etc. Bored yet?