| 摘要 |
A control unit activates a touch sensor according to a predetermined state, for example, an open or closed state of a casing or a side key depressed state and changes, after the elapse of time for performing calibration (about 500 ms), the touch sensor to a state in which contact operation by the touch sensor can be performed. On the other hand, the control unit causes a sub-display unit to display a predetermined rendered image, for example, a character string “touch sensor is operable.” after the elapse of the time for performing calibration.
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