This article introduces the IC Card Gas Meter Charge system's operation principle including the function, the system construction frame, the hardware architecture, the software flow diagram and so on.

介绍了IC卡煤气表收费系统的工作原理，主要包括其功能、系统结构框图、原理图及其软件流程设计等。

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It describes the basic principle of this method and provides the designing approach for the completion of the frame diagram of the whole project and software as well.

文中论述了本方法的基本原理，给出了整体方案的实现框图和软件的设计方法。

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The software frame and the classes relation diagram, the process of work flow are discussed.

对系统软件结构、系统类关联图、业务流程处理等方面进行了论述。

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