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Questions and Answers
What is an output device?
What is an output device?
What term is used for information displayed on a display device because it exists electronically and displays only for a short period?
What term is used for information displayed on a display device because it exists electronically and displays only for a short period?
Which type of display device conveys text, graphics, and video information to the user?
Which type of display device conveys text, graphics, and video information to the user?
What are the two main types of display devices mentioned in the text?
What are the two main types of display devices mentioned in the text?
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What are the advantages of using colors on display devices mentioned in the text?
What are the advantages of using colors on display devices mentioned in the text?
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How do CRT monitors work like a standard television as mentioned in the text?
How do CRT monitors work like a standard television as mentioned in the text?
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What type of technology does a Liquid Crystal Display (LCD) monitor use to create images on the screen?
What type of technology does a Liquid Crystal Display (LCD) monitor use to create images on the screen?
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Which type of display consumes more energy than LCD monitors?
Which type of display consumes more energy than LCD monitors?
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What does a video card do?
What does a video card do?
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What determines the number of colors that a video card can display?
What determines the number of colors that a video card can display?
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Which type of adaptor displays 320 x 200 pixels in 4 colors?
Which type of adaptor displays 320 x 200 pixels in 4 colors?
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What is the main disadvantage of the display devices mentioned in the text?
What is the main disadvantage of the display devices mentioned in the text?
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Which type of display device is usually more expensive than traditional CRT monitors?
Which type of display device is usually more expensive than traditional CRT monitors?
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What is used to describe the sharpness and clearness of an image?
What is used to describe the sharpness and clearness of an image?
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What characterizes the type of technology used by LCD monitors to create images?
What characterizes the type of technology used by LCD monitors to create images?
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What is a common advantage mentioned for display devices?
What is a common advantage mentioned for display devices?
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Study Notes
Output Devices
- An output device is a device that displays or presents the output of a computer system.
Display Devices
- Transient information displayed on a display device is referred to as "soft copy" because it exists electronically and displays only for a short period.
- A display device conveys text, graphics, and video information to the user.
Types of Display Devices
- The two main types of display devices are Cathode Ray Tube (CRT) monitors and Liquid Crystal Display (LCD) monitors.
Advantages of Colors on Display Devices
- Using colors on display devices can enhance the user's experience, improve communication, and make the information more attractive.
CRT Monitors
- CRT monitors work like a standard television, using an electron gun to shoot beams of electrons at a phosphor coating, creating an image on the screen.
LCD Monitors
- LCD monitors use a layer of liquid crystals to block or allow light to pass through a matrix of pixels, creating images on the screen.
- Characterized by using a layer of liquid crystals to block or allow light to pass through a matrix of pixels.
Energy Consumption
- CRT monitors consume more energy than LCD monitors.
Video Cards
- A video card, also known as a graphics card, is responsible for rendering images on the screen.
- The number of colors that a video card can display is determined by the number of bits used to represent the color.
Adaptors
- An EGA (Enhanced Graphics Adaptor) displays 320 x 200 pixels in 4 colors.
Disadvantages of Display Devices
- The main disadvantage of display devices is eye strain or fatigue.
Cost of Display Devices
- LCD monitors are usually more expensive than traditional CRT monitors.
Image Quality
- The sharpness and clearness of an image are referred to as its resolution.
- LCD monitors are characterized by using a layer of liquid crystals to block or allow light to pass through a matrix of pixels, creating images on the screen.
Common Advantage of Display Devices
- A common advantage of display devices is that they can enhance the user's experience, improve communication, and make the information more attractive.
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Description
Test your knowledge about output devices and their functions with this quiz. Learn about display devices and their role in conveying text, graphics, and video information to users.
