Verilog 实现自动售货机，现在，自动售货机产业正在走向信息化并进一步实现合理化。例如实行联机方式，通过电话线路将自动售货机内的库存信息及时地传送各营业点的电脑中，从而确保了商品的发送、补充以及商品选定的顺利进行-CLK: standard clock signal, in this case, the frequency for 4Hz

Now, the vending machine industry is on her way to the information and further achieve rationalization. For example implements online mode, through telephone lines will vending machine in inventory information timely transmission each outlet in the computer, thus ensuring the goods delivered and supplement of goods, and selected smoothly