| 摘要 |
<p>A touch sensor is activated depending on whether a predetermined condition is satisfied, for example, whether a housing is opened or not, whether a side key is pressed or not, etc. After a time period (about 500 ms) in which calibration is performed passes, the touch sensor can be touch-operated by the touch sensor. On a sub-display section is displayed a predetermined drawing, such as a letter row "touch sensor is operable," is displayed after the time period in which calibration is performed passes.</p> |
