| 摘要 |
PURPOSE: To enable zonal selection and a wide range of adjustment by a flexible, simple and reliable technique by discriminating the generation of such a state that simultaneous operation of two keys is detected and discriminated as a zone selecting function. CONSTITUTION: For example, within a predetermined time of 0.1 sec, if a key 41 is operated at first and the key 51 in a separate key row is subsequently operated for example, a counter 14 is stopped to display that two keys are operated. After double key operation is confirmed, one end of a zone to be selected or the boundary thereof is discriminated by the action of a zone discrimination circuit device 12 to be accumulated. When at least one separate key, for example, a key 44 or a separate key pair, for example, keys 44 , 54 are operated simultaneously with or after double key discrimination, the other end or other boundary of the zone to be selected is discriminated to be accumulated, for example, in a zone memory 25. |
