What are the classifications of PCB?
The number of layers of the board does not mean that there are several layers of independent wiring layer, in particular, will be added to the empty layer to control the thickness of the plate, usually even number of layers, and contains the outermost two layers. Most of the motherboard is 4 to 8 layers of the structure, but the technical theory can do nearly 100 layers of PCB board. Most large supercomputers use very high levels of motherboards, but since such computers can already be replaced by clusters of many ordinary computers, the multi - layer board is gradually being used. Because the PCB in each layer are closely integrated, it is not easy to see the actual number, but if you look at the motherboard, you can see.
With a double and two single block as inner layer as the outer layer or two double-sided printed circuit board for the outer layer of the inner layer, two single block, through the positioning system and an insulating adhesive material alternately printed circuit board according to the design requirements for interconnection together and the conductive pattern becomes the four layer, six layer printed circuit board, also known as for multilayer printed circuit board.
PCB board has the following three main types of division: Boards (Multi-Layer) in order to increase the area can be wired, multilayer board with more single or double-sided wiring board
According to the circuit layer classification: divided into single panel, double sided board and multilayer board. Common multilayer boards are generally 4 or 6 layers, complex multilayer board up to dozens of layers.
