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Examining Display Devices

Examining Display Devices. Computer Concepts Unit B. Examining Display Devices. Give examples of Output devices: Monitor, Primary output device Printer Speaker Headphone. Examining Display Devices. Why are some monitors so much bulkier than others?

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Examining Display Devices

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  1. Examining Display Devices Computer Concepts Unit B

  2. Examining Display Devices • Give examples of Output devices: • Monitor, Primary output device • Printer • Speaker • Headphone

  3. Examining Display Devices • Why are some monitors so much bulkier than others? • They are bulky and big because of the technology they use. • CRT ( Cathode Ray Tube) monitors

  4. Examining Display Devices • What are my choices for a monitor? • LCD ( Liquid Crystal Display) screen. • Monitors are also called flat-panel displays • LCD monitors produce an image by manipulating light within a layer of liquid crystal cells. • Used in Notebook computers • Advantages: • Display clarity • Low radiation emission • Portability • compactness

  5. Examining Display Devices • What are my choices for a monitor? • LED( Light Emitting Diodes) screens. • Looks like LCD.

  6. Examining Input Devices • What type of screen do handheld devices use?? • OLED ( Organic Light Emitting Diodes) • Used in GPSs and cell Phones • Use less power than LCD • Have bright, crisp image and faster response rate than standard LCD. • Expensive??? • As the technology develops, they are likely to become less expensive even more popular.

  7. Examining Input Devices • Why should I care which graphic card is in my computer? • A Graphic Card: contains the circuitry that generates the signals for displaying an image on the screen. • The amount of available memory is the key to the overall performance. • Response rate: is how fast a screen update the information being displayed.

  8. Examining Input Devices • What determines the best image I’ll get on the screen? • Resolution: the maximum number of horizontal and vertical pixels that are displayed on the screen. • Pixel (picture element) is a single point or the smallest unit in a graphic image.

  9. Examining Display Devices • What determines the best image I’ll get on the screen? • Higher resolution, computer displays a larger work area with text and another objects smaller. • Try to change your monitor resolution and see the difference. • 1024 X 768 resolution • 800 X 600 resolution

  10. Examining Display Devices • What is the typical screen size for a monitor? • Screen size is the measurement in inches from one corner of the screen diagonally across to the opposite corner. • Monitor screen sizes range from 13” to 24”. • Viewing angle width: which indicates how far to the side you can still clearly see the screen. • A 170 degree viewing angle is better than a 150degree viewing angle

  11. Examining Display Devices • What is dot pitch? • Dot pitch (dp): is a measure of image clarity. • Not like resolution, it is not customizable.

  12. Examining Display Devices • Can I customize the color settings for my monitor? Yes • Color depth or bit depth: the number of colors that a monitor and graphics card can display. • 24-bit color depth>>> display more than 16 million colors

  13. Examining Display Devices • Can I use computer monitor to watch TV? Yes • If your display system equipped with: • NTSC: National TV Standards Committee • HDTV: High Definition Television

  14. Thank you • Questions !!!

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