| 摘要 |
<p>A drawing is placed on a panel on an input unit (11), and an operation instruction for calculating the length, area and volume by using a pointing device, such as a stylus pen, and coordinate values on the drawing are input. The input operation instruction and coordinate values are analyzed in an analysis control unit (12), and the data obtained by the analysis are subjected to contraction-scale computation to start a length measuring unit (13), an area measuring unit (14), and an arithmetic unit based on four rules of arithmetics (15) and thereby compute quantities including the length, area and volume. The results of this computation and what are input from the input unit are output from the analysis control unit (12) to a display unit (17) and a printer (18) through an output control unit (16).</p> |
