Integrated circuit is a kind of micro electronic device or component. Using a certain process, the transistors, resistors, capacitors, inductors and other components and wiring required in a circuit are interconnected, fabricated on a small or several small semiconductor chips or dielectric substrates, and then packaged in a shell to form a micro structure with the required circuit functions; All the components have formed a whole in structure, making the electronic components a big step towards miniaturization, low power consumption, intelligence and high reliability. It is indicated by the letter "IC" in the circuit. The inventors of integrated circuits were Jack Kilby (integrated circuit based on germanium (GE)) and Robert Noyce (integrated circuit based on silicon (SI)). Nowadays, most of the applications in the semiconductor industry are silicon-based integrated circuits.