ATM is a device for issuing money and processing information. Any such device is connected to a computer center (such centers are called processing), which provides control over the entire ATM network of a particular bank.
What is the structure of ATMs and banking networks, how is the money issued? At the moment when you inserted the card into the ATM, entered the PIN code and selected the appropriate transaction for the issuance of funds, a request is sent to the processing. The computer center redirects it to the bank that issued the card. Processing provides an electronic transfer of the ordered amount from your account to your own. And only after that a command to issue cash is sent from the computer center.
Now consider the internal structure of ATMs. Structurally, the device has two main parts: user (upper) and safe (lower). For security reasons, the device of ATMs is organized in such a way that the safe part is located in a place inaccessible for attackers. In this regard, such device designs have been developed where the safe is located separately from the user part. So, the front panel of the device can be on the street or inside the building, and the safe is always indoors behind the wall. These devices are called interwall. Such an ATM device (the photo below will help the reader get an idea of such designs) not only has enhanced security, but makes them convenient for collection.
Also at the bottom of the device is a dispenser - a device designed to issue cash. You should know that the device of ATMs provides two dispensers, the second is the window for issuing banknotes. Money is loaded into the device in special cassettes, the volume of which can be from two to three thousand bills. Typically, the cassettes are filled completely so as not to have to frequently service the machine. Dispensers have a configuration that provides for refueling from two to five different denominations of banknotes. They even allow you to resize cells (width and length). When issuing
money, the bill from the cassette falls into a special feeder, which is located near each cell. Then it passes through a special device called Double Detect. It is intended for verification with the help of sensors of the received banknote: whether it has its size and thickness, whether or not there are distortions. If everything is in order, the bill falls into a storage device called a stacker, and if not, it is dumped into the divert cassette. It usually includes worn, torn, stuck together, with curved edges money, or banknotes in case of any malfunction, for example, a
power outage.When the amount requested by the client is typed in the stacker, it is sent to the device for issuing money.
At the top of the ATM is the entire electronic filling, in fact, it is a regular computer, a credit card reader, a journal and receipt printer.
The device of the Sberbank ATM does not differ from the device of a standard machine, the description of which is given in our article.