Output Devices And Their Uses
Overview
Once a computer has finished processing, it has to communicate the result, to a person or to a machine. The screen you are reading, the printer in the office, the projector in a lecture hall and the motor that opens a car-park barrier are all output devices, each turning the computer's digital signals into something useful in the real world. Choosing the right one decides whether a document looks crisp, a presentation reaches a whole hall, or a control system actually moves a valve.
In this lesson you will meet the output devices the Cambridge syllabus requires: monitors, touch screens (as output), multimedia projectors, laser, inkjet and dot matrix printers, plotters, 3D printers, speakers and actuators. You will learn how each works, where it is used, and how to weigh quality, speed, cost and purpose so you can justify the best device for any situation.
Objectives
- Output devices.
- Characteristics, uses, advantages and disadvantages of output devices including: monitors, touch screen (as an output device), multimedia projector, laser printer, inkjet printer, dot matrix printer, plotter, 3D printers, speaker, actuator.
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Output Devices And Their Uses. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which one of the following is NOT an output device? A. Speaker B. Plotter C. Actuator D. Microphone Answer: D
- A busy office needs to print a very large number of high-quality black-and-white documents quickly. The best printer is: A. Inkjet B. Laser C. Dot matrix D. Plotter Answer: B
- Which output device is most suitable for producing carbon copies on multi-part stationery? A. Laser printer B. Inkjet printer C. Dot matrix printer D. 3D printer Answer: C
- Which output device lets a computer open a valve in a control system? A. Monitor B. Speaker C. Actuator D. Projector Answer: C
- Before a speaker can produce sound from a digital file, the data must pass through a: A. ADC B. DAC C. CPU D. RFID reader Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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