| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of components by a novel switch which functions for sound volume adjustment and also for game mode setting.SOLUTION: A setting area of an operation part includes a plurality of output sound volume setting areas and different game modes (a normal mode and a power saving mode) are made correspondent to the output sound volume setting areas, such that one switch functions for sound volume adjustment and also for game mode setting. |
