ARITHMETIC UNIT, CONTROL METHOD THEREFOR, STORAGE MEDIUM STORING CONTROL PROGRAM OF THE UNIT, ELECTRONIC CIRCUIT DEVICE UTILIZING ARITHMETIC UNIT, CONTROL METHOD THEREFOR AND STORAGE MEDIUM STORING CONTROL PROGRAM OF THE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a device capable of reducing a time especially at the time of program activation concerning an arithmetic unit and its control method, storage medium for storing its control program, electronic circuit device utilizing the above arithmetic unit and its control method as well as storage medium for storing the control program. SOLUTION: This arithmetic unit is provided with a volatile main storage device for tentatively storing data at the time of the operation of an execution means for executing an application program 160 under an operating system 161; a nonvolatile storage device 106 connected to the main storage device; a data saving means for saving the data stored in the main storage device into the nonvolatile storage device 106 prior to power OFF; and a transfer means for transferring the data saved in the nonvolatile storage device 106 to the main storage device at the time of reactivation. In this case, since the execution means reproduces an execution state at the time of previous power OFF based on the data transferred from the nonvolatile storage device 106 to the main storage device at the time of the reactivation, program activation time is reduced.