某自动售货机售A，B，C3种商品，他们的价格分别为1，3，4。 售票机进接受一元硬币。售货机面板上设有投币孔和退钱建，每种商品标识处有选择按键，上有指示灯表明当前投币说是否已经足够选买该商品。 -Vending machine sales to a certain A, B, C3 commodities, their prices were 1,3,4. Into the ticket vending machines to

数字逻辑的自动电子售票机的quartus编程。-Digital logic quartus automatic electronic vending machine programming.