To provide a digital compound machine capable of processing jobs at higher speed at normal operation time and of protecting charge information reliably.

The digital compound machine 1 comprises: a job processing part 11 for processing a job; a volatile recording part 30 for recording information on a job in the middle of processing including charging information in the middle of the processing up to a point of time when the processing of the job in the middle of the processing of the job processing part 11 is completed; a nonvolatile recording part 20 for recording complete job information including at least complete charging information to be charging information for the job after the processing of the job is completed by the job processing part 11; a detection part 45 for detecting that power supplied to a self device has stopped; and an information evacuation part 44 for having the non-volatile recording part 20 record the charging information in the middle of the processing when the detection part 45 has detected that the power supply stopped.