| 摘要 |
PROBLEM TO BE SOLVED: To display more accurate available time according to battery residual quantity. SOLUTION: When a user instructs the display of battery residual quantity, a controlling part 16 calculates the available time of each operation mode in the case of using the operation mode on the basis of the battery residual quantity of a battery 20 detected by a battery residual quantity detecting part 19 and preliminarily registered power consumption per unit time of the operation mode and stores the available time in a RAM 18. The controlling part 16 then displays the available time of each operation mode stored in the RAM 18 on a displaying part 21 in each operation mode. |
