MS-4130 is a PCB (printed circuit board) used in Plato systems. It is the main logic board that contains most of the logic and control circuits of the digital logic components used in the system. It is used to control the various internal functions of the Plato system. MS-4130 can be used to control the power supply, memory, peripheral controllers, and data exchanges between different subsystems. It can be used to provide data exchange between the CPU, input/output devices, and storage devices.