说明：  自动售饮料控制器 (1) 该系统能完成货物信息存储、进程控制、硬币纸币处理、余额计算和显示等功能； (2) 该系统可以销售20种货物，每种的数量和单价在初始化时输入，在存储器中存储。用户可以用1元和5角的硬币以及20元、10元、5元、1元纸币进行购物，按键进行选择。 (3) 系统根据用户输入的货币，判断钱币是否够，钱币足够则根据顾客的要求自动售货，钱币不够则给出提示并退出。 (4) 系统自动计算出应找钱币余额和库存数量并显示。
(Beverage vending controller (1) The system can complete cargo information storage, process control, handling coins notes, the balance of computing and display capabilities (2) The system can sell 20 kinds of goods, quantity and unit price of each in the initial of when the input is stored in memory. Users can use one yuan and five dime and 20 yuan, 10 yuan, 5 yuan, 1 yuan notes to shopping, a selection button. (3) the monetary system based on user input to determine whether enough money, enough money under the requirements of automatic vending customers, money is not given prompt and exit. (4) The system will automatically calculate the balance and the inventory should be to find the number of coins and displays.)