DS3820MAUC is a printed circuit board developed by General Electric. It is a part of the Mark IV series. This system is designed to control gas and steam turbines, and it is based on integrated microcomputers that monitor the turbine system 24 hours a day, protecting it from problems like fire, vibration, overspeeding, and flame loss. The startup, speed control, control sequencing, and shutdown can all be automated using the Mark IV.