说明：  本书是一本嵌入式硬件设计的入门教材，主要是关于为嵌入式应用设计小型机器的书。市场上有很多专门讲述为特定微处理器编写代码的书籍，也有一些侧重于嵌入式系统设计方法（但没有提供实践信息）的书籍。
(This book is an embedded hardware design of the entry materials, primarily for embedded applications on small machines book. The market there are many devoted to writing code for a specific microprocessor books, some focused on embedded system design methodology (but did not provide practical information) books.)