Electronic components refer to the finished products that do not change the molecular composition when they are produced in factories. Examples are resistors, capacitors. He is called a passive device because he does not produce electrons and can't control or conversion of current and voltage.

When the factory is producing and processing, the finished product with molecular structure is electronic device. Examples include transistors, electron tubes, and integrated circuits.

Because electronic devices can produce electrons themselves, they can control voltage and current, and they can also transform functions (amplification, switching, rectification, detection, oscillation and modulation, etc.), so it is also called active device dial. Electronic devices can be divided into 12 categories. Generally people classified into vacuum electronic devices and semiconductor devices. The development history of electronic components is actually a condensed history of electronic development.

Electronic technology is a new technology developed at the end of the nineteenth century and the beginning of the twentieth century. Our factory developed fastest and applied most widely in the twentieth century. We have become an important symbol of the development of modern science and technology.