| 摘要 |
<p>PURPOSE:To clearly inform the generation cause information of a low battery phenomenon by outputting different kinds of warning messages in accordance with a period when a power source is turned off in the case generation of the low battery phenomenon of a battery is detected. CONSTITUTION:A ROM 3 stores a deciding function for comparing the date and time at that time and the date and time stored in a timepiece circuit 7, when it is informed that a lowered state of a battery is generated by a low battery detecting function of a DRAM 4, and deciding whether a time difference of both of them exceeds a prescribed time or not, and a warning message output function for outputting and displaying different kinds of warning messages to an indicator 12 in accordance with a result of decision, as programs, respectively. In such a way, in the case a low battery phenomenon of a battery is generated, the generation cause related to whether it is generated due to a fact that the battery is discharged exceeding a prescribed time or generated due to an unexpected accident can be informed clearly.</p> |
