比较纤细的介绍了嵌入式系统的组成，原理和一些基本应用，是一本很好的电子书。-relatively slim introduction to the embedded system components, some of the basic principles and applications, is a very good e-books.

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Unix 系统编程实用参考书，和大家分享，详细描述见英文描述-Part basic primer, part reference guide, this slim volume will make your life with UNIX much simpler. This book is specifically designed for those who are new to UNIX and contains neither introductory-level condescensio

为ppt格式，纤细介绍了JAVAEE的运行环境和基本语法，适合初学者学习-Is ppt format, slim introduced JAVAEE the operating environment and the basic grammar, suitable for beginners to learn