1. PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board. It is an important electronic component, a support for electronic components and a carrier for electrical connection of electronic components. Because it is made by electronic printing, it is called a "printed" circuit board.

2. The role of PCB:
After electronic equipment adopts printed boards, due to the consistency of similar printed boards, manual wiring errors can be avoided, and electronic components can be automatically inserted or mounted, automatic soldering, and automatic detection, ensuring the quality of electronic equipment , Improve labor productivity, reduce costs, and facilitate maintenance.