I. Communication

Communication has always been one of the main battlefields of fierce competition among countries. For example, in 2019, the development of 5G is in full swing, and many Sino-US frictions are even caused by 5G technology.

Of course, 5G is only one kind of communication category, the entire communication system is composed of information source, sending equipment, channel, noise source, receiving equipment, and other components, in order to achieve the purpose of information transmission. Communication by transmission medium includes wired communication and wireless communication. According to the working frequency band, it is divided into long wave communication, medium wave communication, short wave communication and microwave communication. According to the modulation mode, it can be divided into baseband transmission and frequency band transmission.

Overall, the communications industry is large and complex, involving many disciplines from the hardware layer to the software layer.

2. Automobile

Automotive electronics is a general term for automotive electronic control devices and automotive electronic control devices, including power control, safety control, communication, navigation, automotive MCU, sensors, body electronics, testing and maintenance, and so on. Especially at present, the development of the autonomous driving industry is getting better and better, and the requirements for automotive electronics are getting higher and higher.

The most important role of automotive electronics is to improve the safety, comfort, economy and entertainment of automobiles, and automobile electronization is also considered to be a revolution in the development process of automotive technology. The degree of automobile electronization is regarded as an important sign to measure the level of modern automobiles, and is the most important technical measure to develop new models and improve automobile performance. Automobile manufacturers believe that increasing the number of automotive electronic equipment and promoting the electronization of automobiles is an important and effective means to seize the future automobile market.

The application of integrated circuits