circuite confectionare imprimate of the first aids that allowed this modernization. The smaller and smaller dimensions and the flexibility of the printed circuit board made in recent years have greatly helped fields such as medicine and aeronautics to benefit from smaller and lighter equipment that has allowed them a high degree
of the simplest printed circuite confectionare imprimate circuit boards is the double layer board. It has copper on both sides, which are called outer layers; Multilayer sandwich boards with additional internal layers of copper and insulation are called multilayer. PCBs can be single-sided (one layer of copper), double-sided (two layers of copper on
traces of one or more layers of copper sheets laminated confectionare imprimate circuite 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 number of layers and the designed interconnection between them (vias, PTHs) gives a general estimate of the