| 摘要 |
PURPOSE:To always set the operation accurately and to easily obtain proper control by allowing a discrimination means to validate only the input of a preset key being operated to the end when simultaneous operation of plural preset keys is detected. CONSTITUTION:Two of display lights 26g-26k of preset keys 25g-25k or over are not simultaneously lighted and if two of the keys or over are depressed simultaneously, only the display light of the key depressed to the end in the two keys is lighted. Then the content of a preset memory corresponding to the key is read out and written in an output data memory. Thus, an analog switch 13 is controlled by a control data written in the preset memory and the equalizing characteristic corresponding thereto is given to an audio signal. Since the result is displayed simultaneously on a display device 26a, the operating state is always grasped sufficiently. |
