| 摘要 |
PROBLEM TO BE SOLVED: To attain operation of a controller while viewing a setting value displayed in the very vicinity of the controller. SOLUTION: The controller 12 generates a control signal and a display controller 16 generates a display signal corresponding to the control signal and gives the display signal to a display 13. The display 13 displays an image on the basis of the display signal. The controller 12 is fitted onto a front side of the display 13 in the vicinity of a display area 18 on which information relating to the controller 12 is displayed.
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