Automatic vending machines:

An automatic vending machine is a machine that dispenses items such as snacks like wafers, biscuits, etc. beverages, ice-cream, chocolates, news-papers, etc. to customer automatically after the customer inserts currency coins as mentioned on the machine.

• Greek engineer and mathematician called Hero of Alexandria invented vending machine.
• The owners of such machines load the machine with the products. The price of each item is mentioned on the machine in the form of currency coin. For example, a cold-drink charging ₹ 30 can be obtained by inserting three coins of denomination ₹ 10 each. He then, inserts the coins in the machine slots and press specific buttons. The items will be dispensed in the machine tray.
• The customer looks through the transparent glass of the machine and decides the item he wish to buy.
• The biggest advantage of these machines is that they can be operated for twenty-four hours non-stop.
• Moreover, one does not need to incur expense of staff, training, establishing a shop, etc.
• Vending machines are generally installed at public places like shopping malls, airports, railway station, etc.