To improve operability of a CDU by enabling easy restoration of data contents in an MC(a memory card) even if mistakenly writing data into the MC.

In this integrated control display, data transmission/reception between the CDU 1 and the MC 4 integrates a radio 2 and a navigation device 3 to execute display and control. In an MC reading process, the data stored in the MC 4 are loaded to a memory of the CDU 1, and is copied to a backup table when the reading number of the MC 4 is one. In a backup process for the MC 4, the data held in the backup table are written into the MC 4. Thereby, even if mistakenly writing the data into the MC 4, the contents of the backup table are written into the MC 4 to easily restore the MC data to the original state by executing the MC backup operation.