Comprehension check. Match the beginnings of the sentences in the first column with the endings in the second.
A
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B
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1. In addition to the basic typing keypad, computer keyboards include a collection of function keys
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a) it can travel through expansion slots, cards, ports, and cables.
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2. A pointing device allows you
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b) to use the mouse on a wide variety of surfaces without a mouse pad.
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3. A recurring cost of using a printer is the ink-jet or laser cartridge
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c) designed for computer-specific tasks.
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4. An optical mouse provides more precise tracking, less maintenance, and more flexibility
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d) to manipulate an on-screen pointer and other screen-based graphical controls.
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5. As data moves along the expansion bus,
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e) that offers an inexpensive and dependable way of output.
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6. A CRT (cathode ray tube) display is a device
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f) that must be replaced every few thousand pages of output.
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Vocabulary practice
1. Fill in the blanks in the sentences with the necessary word(s); all the letters of the word(s) are given on the right.
1. Some … are designed to avoid wrist and injures caused by hours of keyboarding.
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OAYEDSBKR
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2. Certain input devices record and … the sound of the human voice into … signals.
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TRNVOEC
TIIGDLA
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3. Some input systems … a computer to understand a voice it has never heard.
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WOLLA
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4. The first generation of digital cameras could create photos with … of 650 x 480 pixels.
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ULOOESRNTI
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5. An optical mouse requires less …; you can … it on any kind of surface.
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EANEACINNTM
EANALMPIUT
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6. Even a steady image on a monitor is constantly regenerated, or …, from top to bottom.
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DEEFHRRES
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2. Fill in the missing words choosing from the variants given.
a) viewing angle b) pixel c) resolution d) surface
e) allows f) pitches g) display
1. A keyboard … the user to key in programs and data and to control the computer system.
2. An optical mouse uses an onboard chip to track a light beam as it bounces off a …, such as a desk, clipboard, or mouse pad.
3. Some … screens, can be classified as both input and output devices.
4. Greater … densities and smaller dot … yield sharper images of higher resolution.
5. A wide … indicates that you can view the screen from various positions without compromising image quality.
6. Printer … is measured by the number of dots printed per linear inch.
3. Match the beginnings and the endings of the statements given and put the sentences you get into the correct order.
1. Once the connection is made,
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a) you’ll probably have to install driver software.
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2. You have to use the expansion bus
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b) must match the peripheral device and a port on the computer.
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3. If you want to install a peripheral device
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c) to recognize just any peripheral device automatically.
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4. If it does not,
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d) PnP will recognize the new device.
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5. If the right type of port is not available,
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e) you need PnP.
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6. PnP is a feature that allows the computer
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f) you might have to add an expansion card.
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7. The cable you use
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g) to make a connection between the system board and a peripheral device.
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4. Fill in the gaps in the text with appropriate words.
Most computer systems include a keyboard and some type of ___ device for basic data input. A mouse is standard equipment with most desktop computer systems. For output, most computers include a display device. A ___ produces an image by spraying electrons toward the screen. ___ technology produces an image by manipulating light within a layer of liquid crystal cells. ___ screen technology creates an on-screen image by illuminating miniature fluorescent lights arrayed in a panel-like screen. Image quality for a display device is a factor of screen size, ___ ___, ___ of viewing angle, resolution, refresh rate, and color ___.
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