| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electronic device that is provided with a function to judge the cause of the voltage drop of a secondary battery and display the cause. SOLUTION: When a voltage drop detecting signal is generated from a battery-low detecting section 17, a CPU 12 finds the sum total of the operating time of battery 14 from the content stored in a calendar timer 10 about the operating state of the battery 14 and judges whether or not the sum total exceeds the operable time of the battery 14. When the sum total exceeds the operable time, the CPU 12 displays a message instructing the battery 14 to be charged on a liquid crystal display, because the battery 14 discharges electricity. When the sum total of the operating time is 8 hours, the CPU 12 displays such a message that shows investigation or repair is necessary on the liquid crystal display, because it is considered that abnormality has occurred in the system of the battery 14, the main body of a handy terminal, a battery charger 15, etc.</p> |
