ICT Chapter 2.3 Output Devices

What is the primary function of a printer?

• To produce physical copies of digital documents or images.

• To store digital files permanently.

• To scan documents and images.

• To connect to the internet and browse websites.

Answer explanation

The primary function of a printer is to produce physical copies of digital documents or images, making the first answer choice correct. Other options describe functions of different devices.

Name one advantage of using an inkjet printer.

• Lower initial cost

• Slower printing speed

• Larger footprint

• Higher ink cost

Answer explanation

One advantage of using an inkjet printer is its lower initial cost compared to other types of printers, making it more accessible for home users and small businesses.

What is a disadvantage of laser printers?

• High-quality color printing

• High initial cost and maintenance expenses.

• Low energy consumption

• Compact size and lightweight

Answer explanation

A disadvantage of laser printers is their high initial cost and maintenance expenses, which can make them less economical for some users compared to other printing technologies.

How do monitors display images?

• Monitors display images by printing them directly onto the surface.

• Monitors display images by controlling the color of individual pixels based on signals from the graphics card.

• Monitors display images by projecting light onto a screen from behind.

• Monitors display images by using a series of rotating mirrors.

Answer explanation

Monitors display images by controlling the color of individual pixels. Each pixel's color is adjusted based on signals from the graphics card, allowing for detailed and dynamic image rendering.

What is one advantage of LED screens over LCD screens?

• Better color accuracy

• Faster response time

• Higher resolution

• Better energy efficiency

Answer explanation

One advantage of LED screens over LCD screens is better energy efficiency. LED technology uses less power, which can lead to lower energy costs and a smaller environmental footprint compared to traditional LCD screens.

What is a disadvantage of LCD screens?

• Limited viewing angles leading to color distortion.

• Faster response times than plasma displays.

• Better color accuracy than CRT screens.

• High energy consumption compared to OLED.

Answer explanation

LCD screens often suffer from limited viewing angles, which can lead to color distortion when viewed from the side. This is a significant disadvantage compared to other display technologies.

What is a key feature of touch screens?

• Direct interaction with the display.

• Displays images without user input.

• Operates only with physical buttons.

• Requires a stylus for operation.

Answer explanation

A key feature of touch screens is their ability to allow direct interaction with the display, enabling users to control the device by touching the screen, unlike devices that rely solely on physical buttons.

Name one advantage of using a multimedia projector.

• Lower cost of traditional projectors.

• Increased battery life for portable devices.

• Simplified setup with fewer cables.

• Enhanced visibility for presentations.

Answer explanation

One advantage of using a multimedia projector is enhanced visibility for presentations, allowing larger audiences to see content clearly, which is crucial for effective communication.

What is a disadvantage of using a multimedia projector?

• High cost of maintenance.

• Reduced visibility in bright environments.

• Easy to set up and use.

• Excellent image quality in all lighting conditions.

Answer explanation

A key disadvantage of multimedia projectors is reduced visibility in bright environments, making it difficult to see the projected image clearly. This limits their effectiveness in well-lit rooms.

What is the main use of a plotter?

• To scan documents and convert them to digital format.

• To create 3D models and prototypes.

• To store large amounts of data securely.

• The main use of a plotter is to produce high-quality graphics and large-scale prints.

Answer explanation

The main use of a plotter is to produce high-quality graphics and large-scale prints, making it essential for tasks like creating blueprints, posters, and detailed designs, unlike the other options which describe different devices.