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 environment, on the cross compiler and device drivers, also make the relevant narrative.