| 摘要 |
PURPOSE:To permit easy design and check of a pattern for printed wiring by marking the pattern with a color which is images when copied and marking an electrical circuit signal for the parts to be disposed with a color which is not imaged when copied. CONSTITUTION:Through-holes 21, a pattern 25 in the side A, a pattern 22 on the side B, holes 23 for conducting the front and rear and outside contour wires 24 for a printed wiring board of a pattern drawing are marked with the black which appears in the stage of copying and logical signals of an IC and other electrical circuit symbols 7 are marked with the bluish color which is not imaged when copied. Then, the pattern design and checking is made easy by the display of electric circuit symbols 7. |
