WIRING INPUT METHOD FOR CAD SYSTEM

PURPOSE:To improve the designing efficiency of a CAD system by defining the start point of a segment as a spot or a connection terminal on the segment, supplying a folded point and the segment end point in the form of a segment instead of spots and therefore changing the parallel wirings including the wiring input and bends and the space between wirings at the middle of a segment. CONSTITUTION:A segment g1 is supplied by an input means like a tablet, etc., so that the segment g1 crosses the wirings or terminals T1-T6 of circuit elements S1 and S2. These intersecting points K1-K3 are defined as the starts point of the segments to be supplied. Then virtual segments V1-V6 which are erased later are drawn out from said start points in the direction where the segment end points can exist. A segment g2 is supplied by the input means so that the g2 crosses the segments V1-V6. These intersecting points K4-K6 are defined as the end points of the segments to be supplied and the segments connecting those start points and end points of segments are defined as the segments l4-l6 to be supplied. Furthermore the end points K4-K6 also serve as the start points of the segments to be newly supplied. These procedures are repeated to perform wirings between circuit elements.