Which type of projector uses a lamp and mirrors to project an image onto a screen?

• Overhead Projector (OHP)

• Digital LED Projector

• 3D Projector

• Pico Projector

What is the primary difference between LCD and LED screens?

• LED screens use liquid crystals, while LCD screens use LEDs for backlighting.

• LED screens have higher energy efficiency and better brightness than LCD.

• LCD screens are thinner than LED screens.

• LED screens are cheaper than LCD screens.

Which type of printer is most commonly used for high-quality color printing?

• Dot Matrix Printer

• Inkjet Printer

• Laser Printer

• Thermal Printer

What does a graphic plotter primarily do?

• Print digital photographs.

• Draw large-scale and precise graphics like architectural plans.

• Project images onto a wall or screen.

• Convert text into audio.

What does 'plasma' in plasma screens refer to?

• A type of liquid crystal.

• Ionized gas used for producing light.

• Solid-state backlight technology.

• Plasma coating on the screen.

Overhead projectors use _______ to enlarge and display text or images on a screen.

Plasma screens are better suited for _______ environments due to their high contrast ratio.

A _______ printer uses powder toner to print documents and is known for its speed.

A _______ machine is used to send documents electronically over telephone lines.

_______ are used to enhance audio output from digital devices such as projectors and computers.