| 摘要 |
A graphics-based calculator has a graph/text converter for converting a data point list into graphic data, a graph display buffer for buffering the graph data so as to display a corresponding graph on an output unit, and a graph generator for generating a cursor on the output unit having a graph shown thereon. The cursor can be moved by the user through the input unit, and when the cursor is moving, the graph generator continuously traces a position of the cursor, so as to selectively modify, delete, and insert a data point in the data point list corresponding to the graph based on the position of the cursor.
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