According to different purposes. Is divided into civil, commercial, industrial.
The electronic device comprises an integrated circuit element and discrete circuit elements in two categories.
First, the integrated circuit element should include integrated circuit, integrated circuit and two integrated circuit. Here mainly refers to the large scale integrated circuit, which is based on the semiconductor material as the main body, non semiconductor components such as biological devices and molecular devices have not yet reached the practical level, it can be said on the market of large scale integrated circuit products are semiconductor materials. The two integrated circuit in my concept should be classified as discrete circuits.
Second kinds of discrete circuit elements, in addition to the rest of the semiconductor tube comprises a vacuum tube, resistor, reactance device, coupling device, crystal oscillator device, most are not semiconductor materials.