Предмет: Физика, автор: milenareidan

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Автор ответа: aruzhansaduakasova73

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Student Name: _________________________________ _______________________
Points ________________________ Note _____________________________________
Reading Comprehension. 10 Points
Read the text and find answers to these questions.
The monitor
The characters and pictures that we see on the screen are made up of dots, also called picture elements (pixels).
The total number of pixels in which the display is divided both horizontally and vertically is known as the resolution.
If the number of pixels is very large, we obtain a high resolution display and therefore a sharp image. If the number
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A typical resolution is 1,024 x 768 pixels. The pixel density affects the image: a large number of pixels gives a much
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On colour displays, there are three electron guns at the back of the monitor’s tube. Each gun shoots out a beam of
electron for each of the primary colours: red, green and blue. These electrons strike the inside of the screen which is
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The different phosphor materials are used - one each for red, green and blue. To create different colours, the
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Now flat-screen monitors are fashionable. They are inherently flat, and therefore require less space. In addition, they
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Portable computers use a flat liquid-crystal display (LCD) instead of a picture tube. An LCD uses a grid of crystals and
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1. According to the writer, what is the importance of ‘pixel resolution’? (2 pts)
2. Which unit of frequency is used to measure the refresh rate of a monitor? (1 pt1)
3. In the writer’s opinion, why can a low refresh rate produce eye fatigue? (2 pts)
4. What substance is hit by electrons in a monitor? (1 pt)
5. What is the standard display system for many PCs? (2 pts)
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Vocabulary
Give a short definition in your own words. (for the abbreviations it’s only necessary to write what the letters
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1. RAM
2. ROM
3. ALU
4. CRT
5. gb
6. byte
7. registers
8. bit-map
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