Web Cam and Digital Camera Quiz

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Questions and Answers

What type of information can be communicated using a web cam?

  • Sound communication only
  • Text communication only
  • Sound, video, and text communication (correct)
  • Video communication only

How are photos stored in a digital camera?

  • On the camera's internal hard drive
  • Analogically on a film reel
  • Digitally in a memory card (correct)
  • On a CD inside the camera

What is the main function of output devices in computing?

  • To receive and carry processed data to the user (correct)
  • To process data
  • To store data
  • To input data into the computer

How do flat screen monitors differ from traditional monitors?

<p>Flat screen monitors use different technologies and are more space-efficient (C)</p> Signup and view all the answers

What do advanced graphics cards for games contain?

<p>Their own CPU dedicated to displaying graphics (C)</p> Signup and view all the answers

What is the main difference between laser printers and inkjet printers based on the text?

<p>Laser printers use laser technology while inkjet printers do not. (A)</p> Signup and view all the answers

How do dot matrix printers work according to the text?

<p>By firing a row of pins through an ink ribbon onto the paper. (B)</p> Signup and view all the answers

What is the benefit of using a plotter over a regular printer based on the information provided?

<p>Plotters allow you to print larger images than regular printers. (A)</p> Signup and view all the answers

What is the main role of a multimedia projector as mentioned in the text?

<p>To display presentations like Microsoft PowerPoint to a group of people. (D)</p> Signup and view all the answers

How does the number of pins in a dot matrix printer relate to the quality of the print according to the text?

<p>A higher number of pins results in higher print quality. (B)</p> Signup and view all the answers

Flashcards

Web cam communication

Using a web cam, you can share sound, video, and written messages.

Digital Camera Storage

Digital cameras store pictures as electronic data on a memory card.

Output Devices

Output devices in computing display or present the processed data to the user.

Flat Screen Monitors

Flat screen monitors are thinner and take up less space compared to older monitors.

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Graphics Cards and Games

Advanced graphics cards contain a specialized processor (CPU) for rendering graphics quickly, especially for games.

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Laser vs. Inkjet Printers

Laser printers use a laser beam to create images, while inkjet printers rely on ink jets.

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Dot Matrix Printer Mechanism

Dot matrix printers create images by hitting pins through an ink ribbon, which leaves marks on the paper.

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Plotter Advantages

Plotters can print larger images than regular printers, making them suitable for designs or blueprints.

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Multimedia Projector Role

Multimedia projectors are used to display presentations, like PowerPoint slides, to a group of viewers.

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Dot Matrix Printer Quality

In dot matrix printers, more pins mean higher print quality because more dots are used to create the image.

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Study Notes

Web Cams

  • A small digital movie camera mounted on a PC monitor, allowing two-way communication involving sound and video communication
  • Enables video conferencing and online communication

Digital Cameras

  • Capture photos digitally and store them in a memory card within the camera
  • Photos can be easily transferred to a computer and edited using graphics programs

Output Devices

  • Receive information from the computer and display or print processed data to the user
  • Examples: Monitor, Projector, Printer, Plotter, Speaker

Computer Monitors

  • VDU (Visual Display Unit) displays information in an understandable format for humans
  • Traditional monitors were based on TV screen technology
  • Flat Screen Monitors use different technologies, taking up less room and using less energy

Graphics for Games

  • Advanced graphics cards contain a dedicated CPU for displaying graphics on the screen
  • Recent PCs have built-in advanced graphics capabilities

Multimedia Projectors

  • Projection devices attached to a computer, useful for displaying presentations to a group
  • Ideal for displaying Microsoft PowerPoint presentations

Printers

  • Output devices that produce hard copy outputs from the computer
  • Types of printers:
    • Laser Printer: produces high-quality prints at high speed using laser technology
    • Ink-jet Printer: ideal for low-volume printing, prioritizing high-quality prints over speed
    • Dot Matrix Printer: uses pins and ink ribbon to print, with higher pin count (e.g., 24 pins) for better quality

Plotters

  • Output devices similar to printers, but designed for printing larger images
  • Used for printing banners and large construction drawings

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