IC according to the function can be divided into: digital IC, analog IC, microwave, IC and other IC, among them, digital IC is the most widely used in recent years, the fastest growing IC varieties. Digital IC is the IC transmission, processing, digital signal processing, can be divided into general digital IC and special digital IC.

General IC:

Refers to the user, fields widely used and standard of circuit, such as memory (DRAM), the microprocessor (MPU) and microcontrollers (MCU), reflects the status quo of digital IC and level.

Dedicated IC (ASIC) :

Refers to the user for a specific, some special or special purpose designed circuit.

At present, the integrated circuit has the following several product design, production, sales model.

1. IC manufacturers (IDM) is designed, by their own production line processing, packaging, testing the finished product after chip sales on its own.

2. (Fabless IC design company with standard process (Foundry) a combination of processing line. Chip design company will design the final physical map to Foundry processing and manufacturing, and also, the packaging test also entrust professional manufacturers, the final product chip itself as a IC design company's products sales. For example, Fabless equivalent to authors and publishers, and Foundry is equivalent to the printing shop, play industry "leading role" should be the former.

3. The IC sales company (ORR weiye electronic forever, electron, etc.)

4. IC index (www.hcsindex.com)