| 摘要 |
The present invention provides an electronic device capable of: preventing the increase in hardware size and the loss of information due to power failure even when avoiding the occurrence of an event that the operational comfort may be lost when to-be-held information is modified. The electronic device comprises a flash memory 14 in which a to-be-held information area capable of storing a plurality of to-be-held information is provided, the device further comprising: information management means 12 whereby, when to-be-held information is modified, the modified to-be-held information is written into a free space within the to-be-held information area without erasing to-be-held information that has already been stored therein; and area recovery means 13 whereby, when the control delay of a control means 11 becomes unnoticeable, to-be-held information last written in the to-be-held information area by the information management means 12 is read out to be written into a temporary storage means 15 , while the to-be-held information area is cleared, and then the to-be-held information written in the temporary storage means 15 is written into the cleared to-be-held information area.
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