the conductor will carry. It is recommended that the power and force paths be larger than the signal paths. In circuit imprimat aurit a multi-layer board, an internal layer may be mostly solid copper to act as a ground plane for shielding and power return. For microwave printed circuits, transmission lines can be laid out in a planar
and assembly of printed circuits are automated. Electronic computer aided design software is available to do much of the layout work. Multilayer PCBs allow for much higher component aurit circuit imprimat density because the component paths on the inner layers would occupy the space between the components. The increase in the need for multilayer
printed circuit, imprimat circuit aurit called serigraphy or silkscreen for short, is done on the top layer of the PCB and has the role of a reference indicator for the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with a non-conductive permanent epoxy ink.