| 摘要 |
PURPOSE:To easily execute a graph display processing and also to make an easy-to-see coordinate value display and a trace point display at the time of its graph trace processing. CONSTITUTION:An X coordinate pitch and a Y coordinate pitch per display dot which are calculated corresponding to an X and a Y coordinate range specified by a user for a graphic display part 12 are rounded(RR) corresponding to the specified number of effective digits, and the coordinate ranges are re-set with coordinate pitches consisting of a small number of digits, so X and Y coordinate values corresponding to respective display dots are easy to handle, the graph display process is easily performed, and X and Y coordinate values on a graph displayed at the time of graph tracing have a small number of digits and are very easy to see. Further, points on the graph outside the coordinate ranges are displayed with point marks Pm along the frame of the display part 12, so the user can confirm any trace position. |
