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中文摘要：
介绍了基于Dex／Ucs自动售货机通信系统，并根据Dex特点及其通信原理，在Vb6＋Borland平台上，实现了终端与售货机间通信及数据的采集。此系统的核心为终端与系统间的通信。根据Dex会话层的三次握手来实现通信双方的连接，其中所传输数据遵循Dex协议的格式被封装。系统基于Vb6＋C的模式，利用两者的优势被实现。
英文摘要：
The paper introduces the communication system of vending machine based on Dex/Ucs and how to realize communication and data acquisition between terminal and vending machines on Platform Vb6 ＋ Borland according to feature and communication theory of Dex. The core Of the system is communication between terminal and vending machine which is realized via three-way handshake of Dex session layer. The format of data during transmitting is also based on Dex session layer Protocol. Implementation platform of the system is Vb6＋C module which is a perfect combination of advantages of the two.
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