| 摘要 |
<p>PURPOSE:To facilitate the time limit control for a time limit of application, the maintenance time, etc., by reading out the time information via a reading device for display and also comparing the time information with the present time to inform the time limit. CONSTITUTION:A ROM stores the time information need for the time control for the time limit of application of a back-up battery 4, the maintenance time of a reading device, etc. A RAM is backed up by the battery 4. Then a nonvolatile time information memory 7 like a dip switch, etc., shows digitally a term or a time limit. The time information is read by the reading device and displayed. Otherwise the time information is compared with the present time to inform the arrival of the time limit. Thus it is possible to facilitate the time limit control for an assured term of application of a memory pack, the maintenance time limit of the reading device, etc.</p> |
