The self-help vending machine to analyze sequence of operation from the Angle of science

No self-help vending machine to analyze the operating sequence: from the Angle of science in each, vending machines selling products are different. For example, some sale of alcoholic beverages ( Such as beer, but some prohibited by law from the vending machine sales of alcoholic beverages) 。 Also have vending machines selling cigarettes, but due to the young people to buy cigarettes in severe cases, lead to this kind of vending machine number fell dramatically ( There are individual states ban vending machines selling cigarettes, alcohol and even) 。 Japanese drinks vending machines in some places in major disasters occur, can drink free supply by remote control. (1) the user will money into the slot, monetary recognizer to put money for identification; (2) the controller according to the amount of information can be selling goods through pick button light is provided to users, by users choose to buy goods; (3) presses the button, the user to select goods corresponding controller receives the key information passed by, driving the corresponding components, the user's choice of commodities sold to fetch the mouth; (4) if there is sufficient balance, can continue to buy. Within 15 seconds, the vending machine will automatically find the coin or user rotating work knob, exit the coin. (5) from the refund money mouth coin to complete the deal. The vending machine is a mechanical and electrical integration of automation device, on the premise of receiving money entered, button on the touch control input signal is make the controller to start the related position of machinery complete set, the goods to the output. A: no self-help vending machine works?