Final answer:
In the context of programming and digital systems, events include moving a mouse, clicking a mouse button, a sensor detecting motion, and scanning a credit card. These events prompt a response or activity, unlike a simple operation like adding numbers.
Step-by-step explanation:
Among the provided options, the following are events:
- Moving a mouse
- Clicking a mouse button
- A sensor detecting the motion of an earthquake detector
- Scanning a credit card when you shop
Adding three and four in a program is not considered an event but rather an operation within the program. An event can be understood as an action or occurrence that may prompt a response or change, especially in the context of programming and digital systems. For example, the action of clicking a mouse button generates an event that might be used by a program to initiate a specific action. Similarly, the detection of an earthquake by a sensor is an event that might trigger alarms or automated safety procedures. Scanning a credit card involves the event of reading the card information, which further communicates with the payment systems to process a transaction.