| 摘要 |
PURPOSE:To display circular arcs which differ in size with constant brightness without requiring any troublesome adjusting operation. CONSTITUTION:Read data of reference tables 13 and 16 wherein sines and cosines are stored at constant angular intervals are thinned out according to the diameter of the arc to be drawn. Namely, all data are read out for a standard large circle (radius Ro) and read data corresponding to the ratio (Ro/R) of its radius are thinned out for a small circle (radius R). |
