The role of the network system in wiring In many CAD systems, wiring is determined according to the network system. If the grid is too dense, although the number of channels is increased, the step is too small, and the amount of data in the image field is too large, which must have higher requirements on the storage space of the equipment, and also affect the computing speed of computer electronic products. great influence. And some vias are invalid, such as those occupied by pads of component legs or occupied by mounting holes and fixed holes. Too sparse grids and too few channels have a great impact on the distribution rate. Therefore, there must be a grid system with reasonable density to support the wiring. The distance between the legs of standard components is 0.1 inches (2.54mm), so the basis of the grid system is generally set to 0.1 inches (2.54 mm) or less than an integral multiple of 0.1 inches, such as: 0.05 inches, 0.025 inches, 0.02 inches etc.