Input & Output Devices (Cambridge (CIE) O Level Computer Science): Exam Questions

The paragraph describes the use of output devices in a modern office.

Complete the paragraph using the most appropriate terms from the list. Not all of the terms in the list need to be used.

• actuator

• digital light processing (DLP) projector

• inkjet printer

• laser printer

• light emitting diode (LED) screen

• liquid crystal display (LCD) projector

• liquid crystal display (LCD) screen

• speaker

• 3D printer

In a modern office setup, various devices are used to enhance productivity and communication.

For displaying presentations and videos, a __________ (1) is commonly used as it projects high-quality images onto a large screen.

When it comes to producing physical documents, a __________ (2) printer is preferred for its fast and precise text printing, while an __________ (3) printer is chosen if budget is a concern.

For outputting clear audio during meetings or multimedia sessions, a __________ (4) ensures everyone can hear the sound clearly.

Additionally, a __________ (5) screen is often used in office monitors for its bright and sharp display, making it ideal for daily work.

A farm has an automated drinking system for its animals. The drinking system has a water bowl that contains the water. When the water bowl is empty, it is automatically refilled.

The system uses a sensor and a microprocessor.

Describe how the sensor and the microprocessor are used to automatically refill the water bowl.