History of vending machines

In 1th century BC, the automatic sale of holy water by the Greek hero was the world's first vending machine. In the 1925, the United States developed vending machines for the sale of cigarettes, and since then there have been various modern vending machines for the sale of stamps and tickets. The types, structure and functions of modern vending machines vary according to the items sold, mainly with confectionery, beverages, newspapers and other vending machines. The general vending machine consists of a coin device, an instruction device, a storage and sales device, etc. Coin device is the core of the vending machine, its main function is to confirm the authenticity of the input coin, sorting the type of coin, calculate the amount. If the amount invested reaches the value of the purchased item, a sales signal is sent and the surplus is found. The indicator device is used to indicate the variety of goods selected by the customer. Store the sale device to preserve the goods, receive the sales indication signal, the customer selects the goods to the delivery port. The coin device of the general vending machine consists of a coin port, a selection device, an inspection device to confirm the authenticity of the coin, a calculation device for calculating the amount and a money device. Since the 70, there have been a variety of new vending machines controlled by microcomputers and larger unmanned vending systems using credit cards instead of coins and connected to computers, such as unmanned shopping malls, automatic ticketing and ticketing systems at stations, cash automatic payment machines for banks, etc.