PCB (Printed Circuit Board), the Chinese name is a printed circuit board, also known as the printing circuit board, is an important electronic component, a supporting body for electronic components, and a carrier for electronic components. Because it is made of electronic printing, it is called a "print" circuit board.

　　Act

　　After the electronic equipment uses the printed board, due to the consistency of similar printed boards, it avoids the errors of artificial wiring, and can realize the automatic installation or paste, automatic welding, and automatic detection of electronic components, which ensures the quality of electronic equipment , Increase labor productivity, reduce costs, and facilitate maintenance.

　　Classification

　　(1) Single panel

　　Single-Sided Boards is on the most basic PCB, parts of the parts on one side, and the wires are concentrated on the other side (when there is a patch component, the wire is the same side, and the plug-in device is another).

　　(2) Double -panel

　　The double panels are wiring on both sides of the circuit board, but to use the wires on both sides, there must be an appropriate circuit connection on both sides.

　　(3) Multi -layer board

　　In order to increase the area of the wiring area, multi-layer boards are used with more single or double-sided wiring boards in order to increase the area that can be wired.