How does an ATM works?

What is an ATM machine? 

ATMs, originally called ATM (Automatic Teller Machine or ATM machine) are electronic devices that enable bank customers to make cash withdrawals and check your account statements, deposit cash or checks, transfer money between different accounts banks, using smart card or even buy time for your phone at any time of day, 365 days a year, without having to go to the bank.

History of ATM? 

The first ATM in the world was produced by the firm NCR and installed in London on June 27, 1967, by Barclays Bank . The invention is credited to John Shepherd Barron , but no record that George Simchi handled the patent in New Yok from the 1930's. At first the process was taking too long and did not require a special key, which lent itself to fraud, so the current ATM customers to authenticate using a numerical code called a PIN.
How it works?
A card reader captures the credit or debit card and read the customer information contained in the magnetic stripe is on the back. The data is sent to a central computer.
With the receipt slot has the option to print or not the receipt of the transaction. The screen shows each step of the process: ATM Some monitors use CRT, others screen LCD. Some do the talking. Repeat instructions when a key is pressed and also gives information concerning the bank. Screen buttons are those who say the bank transaction type is required.
Electronic Eye. Is the mechanism that gives cash. Incorporates a sensor that counts each bill once the desired amount requested. Another sensor evaluates the thickness of each paper money: if the tickets are glued or torn, are retained. This count and transaction data are stored in an electronic diary.


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