IC, that is, integrated circuit, is a microelectronic device or element. Using a certain process, the components and wiring needed in the circuit are connected together, made on a small piece or several small pieces of semiconductor wafer or dielectric substrate, and then packaged in a package to form a microstructure with the required circuit function; All the components are integrated in structure, which makes electronic components take a big step towards miniaturization, low power consumption, intelligence and high reliability. It is represented by the letter "IC" in the circuit. Inventors of integrated circuits are jack kilby (Ge-based integrated circuits) and robert noyce (Si-based integrated circuits). Today, most applications in the semiconductor industry are silicon-based integrated circuits.