| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of components by a novel switch having both a sound volume adjusting function and a game mode setting function.SOLUTION: A setting area of an operating part includes a plurality of output sound volume setting areas. The output sound volume setting areas are associated with different game modes (first game mode and second game mode), respectively. The game modes with different performances to be executed on a display device can be switched by simply changing the position for volume adjustment on a switch, thereby providing the switch with both the sound volume adjusting function and the game mode setting function. |
