上位机软件开发采用可视化编程软件，利用面向对象的开发思想方法设计，程序包含数据处理、界面显示、控制调整、系统安全等模块。
O. p as a method for PC programming. The PC program blocks consist of data dealing block, interface block, control adjusting block, system safe block.
用一种简单有趣的方式，叙述了利用面向对象的可视化编程工具进行软件设计的一般过程。
The paper states the normal procedure in a simple and interesting way, in which object-oriented visual programing tool is used to carry out program design.
可视化编程，软件工具与环境，UML建模技术，软件过程，软件项目管理等。
Visual Programming, Software tool& environment, UML modeling technology, Software process, Management of software project.
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