Under the guidance of technical lecturers, first learn the kernel, network communication, network security and database development technology under Linux operating system, then understand the hardware principle of ARM and related programming languages, and learn various embedded driver development technologies under Linux operating system based on ARM processor: character device driver, block device driver, touch screen device driver, watchdog device driver, IIC device driver, network device driver, audio device driver, LCD driver, USB driver and Flash driver. Finally, learn the high-end application development technology under Symbian operating system of 3G mobile phone based on ARM processor. Under the guidance of the teacher, we actually completed three medium-sized projects (simple search engine, simple company information exchange platform system, 3G mobile game, telephone management manual, etc.). ) and independently completed large-scale actual combat: intrusion detection system with SMS function, wireless video-on-demand handheld terminal system, intelligent car alarm.