@explainingbytes on Instagram: "Follow @explainingbytes for more vedios An ATM operates as a secure data terminal that bridges the gap between you and your bank account without the need for a human teller. When you insert your card and enter your PIN, the machine encrypts this data and transmits it across a secure network to verify your identity and check if you have sufficient funds. Once the bank’s central computer authorizes the transaction, it sends a signal back to the ATM, triggering an in