| 摘要 |
Switches SW 1 to SW 4 and variable resistors are formed so as to overlap each other at positions corresponding to the X-axial positive direction, the X-axial negative direction, the Y-axial positive direction, and the Y-axial negative direction, respectively. When at least one of the switches SW 1 to SW 4 is off, no Z-axial output is activated and only X- and Y-axial outputs are activated. On the other hand, when any of the switches SW 1 to SW 4 is on, no X- and Y-axial outputs are activated and only a Z-axial output is activated.
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