PCB( Printed Circuit Board), whose Chinese name is printed circuit board, is also called 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 "printed" circuit board.

The creator of printed circuit board is Austrian Paul isler (1936), who first used printed circuit board in radio. 1943, Americans mostly applied this technology to military radio stations. In 1948, the United States officially recognized that this invention can be used for commercial purposes. Since the mid-1950s, printed circuit boards have been widely used.