| 摘要 |
PURPOSE:To improve the efficiency of data selection, to facilitate and quicken the selection of target data by presetting a selective code, which is allocated to data used usually scarcely with a user to be unselectable through the use of a setting means. CONSTITUTION:The selective code desired to be unselectable is set by the setting means 2C among the selective code allocated to the plural kinds of data. Information relating to the propriety of the selection at every selective code is stored in a storage means 6 according to the setting by the setting means 2C. The selection of the selective code based on the information stored in the storage means 6 is designated by operation elements 2a and 2b for instructing selection. Only selectable selection codes are selected sequentially by a selection control means 3 according to the operation of the operation elements 2a and 2b for instructing selection. Thus, the efficiency of the data selection can be improved and the selection of the target data can be facilitated and quickened. |
