| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an easy method of cleaning a touch panel. SOLUTION: Cleaning mode switching buttons are arranged at four corners on a screen appearing during a cleaning mode. In switching from a normal mode to a cleaning mode, the cleaning mode is established by detecting the touch of the buttons 1-4 in a predetermined order. In canceling the cleaning mode after completing cleaning, the cleaning mode is cancelled by the touch of the buttons in a predetermined order.</p> |
