Write a short note on Automated Teller Machine.

Automated Teller Machine (ATM) — An ATM is a self-service banking device that allows customers to perform a variety of banking transactions without the need for direct interaction with bank personnel, 24 hours a day.
Key Features and Functions:

1. Cash Withdrawal — The primary function is to dispense cash to account holders any time, often without additional charges if the customer's own bank's ATM is used.

2. Balance Inquiry — Customers can check their account balance and get an instant snapshot of their financial status.

3. Fund Transfer — Many ATMs enable transfer of funds between accounts without visiting a branch.

4. Bill Payment — Some ATMs allow payment of utility bills, credit card dues, etc., directly from the account.

5. Deposit Functionality — Advanced ATMs allow users to insert cash or cheques into the machine for crediting to their accounts.

6. Mini Statements — Customers can request a brief statement of recent transactions.

7. PIN Change — Customers can change their ATM PIN (Personal Identification Number) to enhance security.