基于UML的饮料自动售货机系统设计该设计模拟自动售货机的工作原理和方式，完成出售商品、接收钱币、找零钱等功能。 与系统交涉的人有两类：送货员和顾客。 ,UML-based system design beverage vending machine vending machine simulation of the design principles and methods of work, completed the sale of goods, receiving money, look