| 摘要 |
PURPOSE:To inform beforehand the power supply time by a battery power source by performing the power supply time by the battery power source, and making all the said terminals in power on condition display power supply time based on this computation result. CONSTITUTION:When judged that operation confirming signals are sent to all terminals, by the power supply time calculating means, based on the power consumption data of each terminal stored in a storage means and the power supply capacity of battery power, the computation of the power supply time by the battery power is performed. Furthermore, based on this computation result, by a power supply time display means, power supply time display data are transmitted to all the terminals in power ON conditions. And each terminal is made to display power supply time. |
