本书讲述了嵌入式系统硬件的构成，再简要介绍了操作系统的知识，介绍了嵌入式linux及其软件开发环境，就交叉编译及设备驱动程序等也做了相关的叙述。-This book describes the composition of embedded systems hardware, and then briefly introduce the knowledge of the operating system on embedded linux and software development env