connect them using traces of one or more layers of copper sheets laminated on and/or between layers of conductive substrate sheets. A printed circuit board can have several layers of copper which are almost always arranged in pairs. The pcb number of layers and the designed interconnection between them (vias, PTHs) gives a general
role of a reference indicator for pcb the components on the PCB. Graphics and text on a circuit board's PCB are usually printed with a non-conductive permanent epoxy ink. The color is usually white, although other colors are available: yellow, black, blue, red. Screen printing is used to render useful
medicine and aeronautics to benefit from smaller and lighter equipment that has allowed them a high degree of development and effectiveness. Today, in our house, almost every electronic device pcb that helps us in the household contains a larger or smaller printed circuit: refrigerator, vacuum cleaner, television, but also for general use: telephone, computer.