Most development will be used in the field of embedded C language, C language is concise, compact, easy to use flexible coupled with GNU extension, in the actual project development entire embedded C language in plays an important role in the development process, more important is to use C language development in embedded platform portability, high efficiency, a proficient in C language programming, programmers can easily engage in Linux, WinCE, Vxworks, mu C/OS embedded operating systems such as all kinds of software development work, this phase learning goal is to master the basic knowledge of C language, strengthen the C programming grammar foundation, as well as in-depth senior C language programming and data structures and algorithms, programming work to lay a solid foundation for the future,