Printed circuit board (PCB) PCB (Printed Circuit board) PCB (Printed Circuie Board) printed circuit board short, usually on the insulation, according to the intended design, made Printed wiring, printed components or a combination of the two conductive patterns known as the printed circuit.
There are no parts on the top of the PCB, and are often referred to as Printed Wiring Board (PWB). PCB almost we can see the electronic equipment are inseparable from it, small to electronic watches, calculators, general computers, large computer, communication electronic equipment, military weapons systems, as long as there are integrated circuits and other electronic devices, their Electrical interconnection should be used PCB.
In addition to fixing a variety of small parts, it provides integrated circuits and other electronic components fixed assembly of mechanical support, to achieve integrated circuits and other electronic components between the wiring and electrical connection or electrical insulation, to provide the required electrical characteristics
Such as characteristic impedance. At the same time for the automatic soldering to provide solder mask graphics; for components, insert, check, repair and provide identification characters and graphics. As electronic devices become more complex, more and more parts are needed, and the lines and parts on the PCB are becoming more and more dense.
PCB production process is more complex, it involves a wide range of processes, from simple mechanical processing to complex mechanical processing, there are ordinary chemical reactions, such as photochemical electrochemical thermochemistry and other processes, computer-aided design CAM and other aspects of knowledge
