| 摘要 |
PROBLEM TO BE SOLVED: To simultaneously perform the operation of a plurality of buttons and the operation of a complicated procedure. SOLUTION: A direction button 11 and a trigger button group 12 are arranged on the surface of a control pad, and a trigger button group 13 and a trigger button group 14 are arranged on the reverse side. Thus, a plurality of fingers are simultaneously used to perform button operation, and a difficult operation is assigned to the button as function, whereby various button operations can be performed without effort. |
