本段]单片机定义

　　单片机是指一个集成在一块芯片上的完整计算机系统。尽管他的大部分功能集成在一块小芯片上，但是它具有一个完整计算机所需要的大部分部件：CPU、内存、内部和外部总线系统，-This paragraph] definition of SCM is an integrated microcontroller on a single chip a complete computer system. While most of his features into a small chip, but it has a full computer most of the components needed: CPU, memory, internal and external bus system,