SCM that the microcomputer is to CPUs, memory, timer / counter, input and output interfaces are integrated into an IC chip in a microcomputer. . Since 1976, Intel introduced the first single-chip microcomputer, MCS-48, SCM in just see several decades have made great strides in development. With the development of computer technology, the single-chip microcomputer application areas are extensive and in the industrial control, Data Acquisition Instrument automation and many other fields play an important role. To a certain extent, the master of SCM data communications technology has mastered the MCU core application technology. However, in practical application and the requirement of fast response, real-time and control the volume of applications, SCM is often difficult to individual competence.