| 摘要 |
PROBLEM TO BE SOLVED: To effectively evaluate and analyze a graph by the moving display of a pointer related to the characteristics or the like of the graph in a graph display device for graphing and displaying an optional function expression. SOLUTION: The moving interval of the pointer P is inputted and set by the combination of an optional constant symbol (CONST) and a variable value (STEP) on a trace setting screen G displayed at a liquid crystal display part 18 corresponding to the operation of a 'trace' key 12c in a key input part. Thereafter, in a state of displaying the graph corresponding to the function expression key inputted beforehand, when a '←' key 12h or a '→' key 12i is operated so as to move the pointer P initially displayed on the graph, a coordinate value corresponding to the specified moving direction is updated and the pointer P on the graph is moved and displayed for each optionally set moving interval (CONST×STEP). |
