Circuit boards have: chips, sockets, resistors, inductors, capacitors, diodes, transistors, resistor rows, capacitor rows, crystals, digital tubes, batteries, jumper wires and so on. As shown in the picture:
The names of circuit boards are: circuit boards, PCB boards, aluminum substrates, high-frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, printed (copper etching technology) circuit boards and so on. Circuit boards miniaturize and visualize circuits and play an important role in mass production of fixed circuits and optimizing the layout of electrical appliances. Circuit boards can be called printed circuit boards or printed circuit boards, the English name is (Printed Circuit Board) PCB.