The inner construction and function of ticket vending machine(TVM) are discussed. By analyzing the user and function of TVM, a multi-layer architecture based on object-oriented programming is designed, and an evaluation of components is proposed. Thus, the multi-layer architecture of TVM can be gained.%为了进一步了解自动售票机的内部结构及功能模块,采用了面向对象的程序设计方法,通过对自动售票机的用户以及功能分析,对自动售票机软件的分层体系结构进行了划分,并对每一层的结构进行详细阐述,得出了自动售票机软件的分层体系结构.
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