| 摘要 |
PROBLEM TO BE SOLVED: To automatically update the backup data in a short processing time after confirming the data normality by using a confirmation means which confirms that all updated data are normal. SOLUTION: A command reception part 11 of a main memory 10 adds the control data 6n1 to a backup device 30 in response to the data 6n to be rewritten and updated and every time an updating request command is received from a command input device 20. A data rearrangement control part 12 rearranges the data in an ascending or descending order of numbers which are added to those data 6n1 of data 6 respectively. An application part 13 sets the data read flags at 1 according to the commands of data 6n1. A data read monitoring part 14 writes the data 6n in the device 30 in the order of rearrangement after confirming that the data read flags of the registered data 6n are set at 1 respectively. |
