| 源码简介： |
(1)根据不同的身份友好显示不同的功能菜单。 (2)支持多个员工(收银员)同时对超市商品进行销售。 (3)程序使用三层架构思想，采用完全面向对象的思想方法设计。-(1) According to the different identities and friendly display different menus. (2) support for multiple employees (cashier) while sales of commodities in supermarkets. (3) uses the three-tier thinking, the use of fully object-oriented way of thinking design.
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