How Do ATMs Work? 🔰


Introduction:

Automated banking machine (ABM) is an automated banking machine that allows customers to conduct basic transactions without the assistance of bank representatives. There are two types of ATMs. The database allows the client not to draw money and receive a report on the account balance. Another is a more complex machine that accepts deposit, provides credit card payment facilities and reports account information.
It is an electronic device that is used only by bank customers to process bank transactions. Users access their account using a special plastic card that is encoded with user information on a magnetic tape. The tape contains an identification code which is transmitted to the central computer of the bank by modem. Users insert the card into ATMs to access the account and process their transactions. The atm was invented by john shepherd-Barron in the 1960s.

Automated Machine Diagram:

The ABM consists mainly of two input devices and four output devices which are;
Input Devices:
      Card reader
      Keyboard
Output Devices:
Speaker
Display Screen
Receiving The Printer
Cash Depositor

Input Devices:Card Reader:

A card reader is an input device that reads data from a card .The card reader is part of the identification of your particular account number and the magnetic strip on the back of the card is used to connect to the card reader. The card is swiped or pressed on the card reader that captures your account information, that is, the card data is transmitted on the host processor (server). The host processor therefore uses this data to obtain information from cardholders.

Keyboard:

The card is recognized after the machine has requested more details like your personal identification number, withdrawal and your balance request each card has a unique personal identification number so there is little chance for anyone else to withdraw money from your account. There are separate laws to protect the PIN code while sending it to the host processor. The PIN code is mostly sent encrypted. The key card contains 48 keys and is interfaced to the processor.

Output Devices:Speaker:The speaker provides audio feedback when the particular key is pressed. 


Display Screen:

The screen displays the transaction information. Each withdrawal step is displayed on the display screen. A CRT or LCD screen is used by most ATMs.

Receiving The Printer:

The receipt printer prints out all the details of your withdrawal, the date and time and the amount of the withdrawal, and also shows the balance in your account on the receipt.

The Ticket Machine:

The ATM machine is the heart of an ATM machine. It is a central ATM system from which the necessary money is obtained. From this portion the user can collect the money. The distributor must count each invoice and provide the required amount. If in some cases the money is folded, it will be moved another section and becomes the rejection bit. All these actions are carried out by high precision sensors. A complete record of each transaction is kept by the automated teller machine using a PSTN device.