are automated. Electronic computer aided design software is available to do much of the layout work. Multilayer PCBs allow for much higher component density because the component paths placute circuite electronice on the inner layers would occupy the space between the components. The increase in the need for multilayer printed circuit boards with more than
the copper into separate conductive lines called tracks or circuit circuite placute electronice paths, pads for connections, metallized holes (vias) for passing connections between layers of copper as solid conductive areas for electromagnetic shielding or other purposes. Each of the conductive layers is designed with copper tracks (similar to wires on
the PCB board that can help electronice circuite placute users during assembly. It is used to mark component values, part numbers, test points, polarity, etc. Screen printing does not influence the printed circuit and the possible problems that may appear may be slight discolorations due to the high temperatures for gluing