Cambridge IGCSE Computer Science (0478) · lesson 21 of 35 · 20 min
Output Devices
An output device converts digital signals from the computer into a form humans or other systems can use.
Inkjet vs Laser Printers
Which printer type is best for high-volume office document printing?
- Inkjet
- Laser
- 3D printer
- Dot matrix
Answer: Laser
Laser printers are faster and have a lower cost per page for text documents.
What does an actuator do?
- Captures images
- Converts digital signals to physical movement
- Displays text on screen
- Prints documents
Answer: Converts digital signals to physical movement
Actuators convert electrical signals into physical movement — used in robotics and control systems.
Which output device is specifically designed for visually impaired users?
- Projector
- Speaker
- Braille display
- Monitor
Answer: Braille display
A Braille display converts text to tactile Braille characters for visually impaired users.
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