| 摘要 |
PROBLEM TO BE SOLVED: To provide a configuration of a portable terminal device with a volatile memory that, even when a substantial power supply cannot be retained for the volatile memory and the content of the volatile memory is volatilized, it is unlikely to cause a systematic trouble in a subsequent reboot.SOLUTION: A portable terminal device 1 includes: a second control circuit 9 that controls a data transfer between a volatile memory 11 and a second nonvolatile memory 15 or data write to the second nonvolatile memory 15; and an auxiliary power supply 5 that, after stopping a power supply by power supply means, can perform the power supply to the second control circuit 9. The portable terminal device can determine whether or not the power supply from the power supply means to the volatile memory 11 becomes a prescribed stop state. When it is determined that the power supply from the power supply means becomes the prescribed stop state, the second control circuit 9 operates to record at least abnormal history information in the second nonvolatile memory 15. |
