| 摘要 |
PURPOSE:To simplify the operation of a key, and to produce various types of graphs by using a transparent swtich panel which covers a card where a program is stored, and plural characters and symbols related to the program are displayed. CONSTITUTION:A card has a card has a card store part where a program for production of a graph is stored, and desired switch patterns are printed on the surface of the card in response to the positions of 30 touch switches of a switch panel 6. When such a card is set, the program for production of graph which is stored to the card is loaded. Then the graph of a prescribed pattern is produced among those patterns 31-36 with push of a touch switch corresponding to said pattern.
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