| 摘要 |
PROBLEM TO BE SOLVED: To display graph image data which has good continuity that corresponds to the resolution of a monitor screen at the time of converting a graph image data that is produced and shown, e.g. by a graph function electronic calculator into a large monitor and showing it. SOLUTION: A graph expression and a coordinate range are inputted and received from a graph function electronic calculator 11 through an input terminal (IN) 13 and a receiving part 34 and stored in graph data memory 35. Bit map graph image data which is corresponded to dot resolution that corresponds to vertical and horizontal scanning line numbers in a display screen of a video monitor 12 by one to one is created based on it and stored in TV image data memory 35d. A video signal converting part 36a converts graph image data that is generated in accordance with the monitor resolution into a video signal, sent from a sending part 36 to the monitor 12 through a video signal output terminal (OUT) 14 and displayed on the display screen of the monitor 12. |
