说明：  一种基于verilog HDL的自动售货机控制电路设计:能对5种不同种类的货物进行自动售货，价格分别为A=1.00，B=1.50，C=1.80，D=3.10，E=5.00 。售货机能接受1元，5角，111角三种硬币(即有三种输入信号IY，IWJ，IYJ)，并且在一个3位7段LED(二位代表元，一位代表角)显示出来以投入的总钱数，最大9.90元，如果大于该数值，新投入的硬币会退出，选择货物的输入信号I
(Verilog HDL-based vending machine control circuit design: vending of five different kinds of goods, prices were A = 1.00, B = 1.50, C = 1.80, the D = 3.10, E = 5.00. Vending machines can accept $ 1, 5 angle, 111 angle of three kinds of coins (ie, three types of input signal IY, IWJ, IYJ), and a three 7-segment LED (two representatives, a representative of the angle) displayed the total amount of money invested, up 9.90 yuan, if greater than this value, the coins of the new input will exit, select the input signal of the goods)