| 摘要 |
PROBLEM TO BE SOLVED: To display only a coordinate value corresponding to an optional point on a graph required to be known by a user as a numerical list in a graph display device for displaying an optional functional equation inputted by keys as a graph. SOLUTION: When an optional point on a graph plotted in a graph display area 16a of a liquid crystal display part 16 in accordance with the depression of a 'DRW' key 12 is specified by moving a pointer P displayed on the graph by the depression of a 'TRACE' key 12c to an optional position by the depression of a cursor key arrow mark 12e, X and Y coordinate values corresponding to the display dot on the graph specified by the pointer P are calculated and numerically displayed on a numerical list display area 16b. Consequently only the coordinate value of an optional point on the graph required by the user can easily be obtained. |
