ATM controller

An ATM controller is like a computer that helps Automated Teller Machines (ATMs) do their job. ATMs are machines that we use to get money out of banks. The ATM controller helps the ATM do its job by staying in contact with the banks. The controller helps the ATM to check which account you are using and how much money you have available in the account. It also helps the ATM to tell when you are done getting money so that the machine doesn't keep giving you more.