Chapter 4 introduces the UML language and the object concept firstly. Then the static and dynamic state model of EIB object are described. The content of this chapter is important to the graphics design of the monitor and control software.

• 第四章在简要介绍UML建模语言和面向对象编程思想的基础上，用UML语言描述了EIB对象的静态模型和动态模型，这章内容是监控软件图形化设计的理论基础；