Graphical display function of middle grade multi-center display

Clock display (incorporating clock)
Calendar display
Audio system operation display (communicating with radio, CD player and CD changer via M-bus)
Speaker test display (communicating with radio, CD player and CD changer via M-bus)
Compass display (incorporating compass sensor)
Ambient air temperature display (communicating with the A/C-ECU via CAN-bus)
Freeze warning display (communicating with the A/C-ECU via CAN-bus)
A/C operation display (communicating with the A/C-ECU via CAN-bus)