ATM Infomation System

Today in IPT we have to create a diagram with one of our chosen example to explain an information systems function. The example I chose was the ATM.

Examples of information systems

For my class' first IPT lesson we have to find two to three examples of Information Systems.
These are my examples:
Example 1. Using a barcode scanner to scan store products.
Example 2. Using an ATM to withdrawn or check accounts.
Example 3: Online booking systems.