学习软件工程的利器，比Rational Rose小巧灵便，支持到UML2.0，学习使用的好工具-learning software engineering tools, Rational Rose compact than agile, support of the UML, a good learning tool

uml的大量例子，设计分析方面的，值得学习-a large number of examples of uml, design analysis, it is worth learning

UML + OOPC嵌入式C语言开发精讲的源代码，感觉不错，对学习很有帮助。-UML+ OOPC Embedded C language source code succinctly, I feel good, very helpful for learning.