IC (integrated circuit), that is, the integrated circuit adopts the semiconductor manufacturing process to make many transistors, resistors, capacitors and other components on a small monocrystalline silicon chip, and combine the components into a complete electronic circuit according to the method of multi-layer wiring or tunnel wiring. It is represented by the letter "IC" in the circuit (also with the word symbol "n", etc.).

IC IC classification:

IC can be divided into bipolar integrated circuit and field effect integrated circuit according to device type, and MOS-IC belongs to the latter.

According to the type of signal processed, IC can be divided into analog integrated circuit, digital integrated circuit and analog / digital hybrid integrated circuit.

IC can be divided into small-scale, medium-scale, large-scale and super large-scale integrated circuits according to its scale (i.e. the number of search devices included).

IC can be divided into low-power integrated circuit and high-power integrated circuit according to its output power.

IC can be divided into low-voltage integrated circuit and high-voltage integrated circuit according to its working voltage.

There are also low-power integrated circuits, microwave integrated circuits and so on.