Then, comparing the performances and structure of kinds of Micro Processor Unit (MPU), the Atmel AT91RM9200 is chose and introduced in detail.

• 然后，对各种嵌入式微处理器的性能和结构进行了比较，选择了32位高性能ARM9嵌入式微处理器AT91RM9200，详细介绍了其性能特点；