| 摘要 |
<p>PURPOSE:To prevent the unexpected mis-operation of a key or disturbance by the operation of another person from being generated, by prohibiting the change of an operating mode by a key operation by setting a personal identification number from ten keys, and enabling the change of the operating mode to be performed by an operating key only when the same personal identification number is inputted. CONSTITUTION:The operating keys 19a-19f to set the operating mode and the ten keys 19g are provided. A means to store an arbitrary personal identification number set by the ten keys 19g, and an operating means 19i to fix the operating mode and to prohibit the change of the operating mode by the operating keys 19a-19f are provided. Also, the means to decide coincidence between a number numeral inputted from the ten keys 19g in the fixed state of the operating mode and the personal identification number, and the means to cancel the fixture of the operating mode and to enable the change of the operating mode to be performed by the operating keys 19a-19f based on the decision of the coincidence are provided. Therefore, it follows that the change of the operating mode is prohibited until a correct personal identification number is inputted next when the operating mode is fixed once. In such a way, it is possible to prevent the mis-operation from being generated.</p> |
