There are so many different types of vending machine and you may be wondering how do vending machines work. Some vending machines provide snacks like chips, candy and cookies to name a few. There is also vending machine that provide cold and even hot beverages, you can also find vending machines with lunch items in it such as sandwiches. Sometimes in airports you will see vending machine with iPods and other great electronics. All these machine work just about the same way, the machine accepts payment and you select the item code you would like. This is all done electronically, basically computerized. Some vending machines also have refrigerators or freezers installed in them to keep the food fresh and the ice cream frozen.