How Do You Repair A 1979 E250 Van Exterior Roof Panel
Displays, oft called monitors or screens, are the
most-used output device on a computer.They provide instant feedback past showing yous text and graphic images as you piece of work or play.
Most desktop displays use Liquid Crystal Display (LCD) or Cathode Ray Tube (CRT) technology, while about all portable computing devices, such as laptops, incorporate LCDs. Considering of their slimmer pattern and lower energy consumption, LCD monitors (also chosen flat console or flat screen displays) are replacing CRTs.
Basic features
Resolution refers to the number of dots of colour, known as pixels (picture elements), independent in a display. Information technology is expressed by identifying the number of pixels on the horizontal and vertical axes. A typical resolution is 1024x768.
A pixel is a combination of ruddy, green and blue subpixels
Two measurements describe the size of your display: the aspect ratio and the screen size. Historically, computer displays, like about televisions, have had an attribute ratio of four:3 - the width of the screen to the height is four to three. For widescreen LCD displays, the aspect ratio is 16:ix, very useful for viewing DVD movies, playing games and displaying multiple windows adjacent. Loftier- definition TV likewise uses this format.The viewable screen size is measured diagonally, so a 19"screen measures nineteen" from the summit left to the lesser right.
Inside the estimator there is a video adapter, or graphics card, which processes images and sends signals to the monitor. CRT monitors use a VGA (video graphics adapter) cable, which converts digital signals into counterpart signals. LCD monitors utilize a DVI (digital video interface) connection.
Colour depth refers to the number of colours a monitor tin can display. This depends on the number of $.25 used to depict the colour of a unmarried pixel. For example, an one-time VGA monitor with an 8-scrap depth tin can generate 256 colours and a SuperVGA with a 24-bit depth can generate xvi.seven million colours. Monitors with a 32-bit depth are used in digital video, animation and video games to get certain furnishings.
Display technologies
An LCD is made of two glass plates with a liquid crystal material between them. The crystals cake the light in different quantities to create the paradigm. Agile-matrix LCDs utilise TFT (thin film transistor) technology, in which each pixel has its own switch. The amount of light the LCD monitor produces is chosen brightness or luminance, measured in cd/yard2 (candela per square metre).
A CRT monitor is similar to a traditional Tv. Information technology contains millions of tiny carmine, green and blue phosphor dots that glow when struck by an electron beam that travels across the screen and create a visible prototype.
PCs tin can be connected to video projectors, which projection the image onto a big screen. They are used for presentations and home theatre applications.
In a plasma screen, images are created past a plasma discharge which contains noble (not-harmful) gases. Plasma TVs allow for larger screens and wide viewing angles, making them ideal for movies.
Organic Light-Emitting Diodes (OLEDs) are sparse-movie LED displays that don't require a backlight to function. The material emits calorie-free when stimulated past an electric electric current, which is known as electroluminescence.They eat less energy, produce brighter colours and are flexible - i.east. they can be bent and rolled upwards when they're not beingness used.
Choosing the right display device
aE Listen to five customers in a calculator shop describing their display device needs. Which device (a-east) would y'all recommend to each person? In pairs, hash out your choices and give reasons for them.
Speaker 1________________________ Speaker 4____________________________
Speaker 2________________________ Speaker 5____________________________
Speaker 3________________________
Widescreen 24" flat panel Resolution: 1920x1200 Colour support: xvi.7 meg Multiple video inputs, wink- menu slots and USB ports
NEC MultiSyn LCD Monitor Screen size: 17"
Resolution: 1280x1024 (SXGA) Aspect ratio: five:four Brightness: 400 cd/mtwo
Dell UltraSharp LCD monitor
Cambridge- Hitachi interactive whiteboard Allows interaction with a projected computer image Lath size: 78" Connected to the PC via USB Pointing device: cordless pen
Pioneer fifty" Plasma Goggle box Resolution: 1280x768 (XGA) Blu-ray Disc recorder 5.1 surroundings sound system (Five audio channels plus i subwoofer)
Portable projector
DLP (Digital Low-cal Processing) technology
Resolution: 1024x768
Project screen
В Irll In pairs, discuss which of the display devices you would most similar to own. Give reasons for your selection.
Display screens and ergonomics
iv Ergonomics
A BLi Listen to Tony Clark, an expert in calculator ergonomics, talking to some
part workers about wellness and prophylactic. What health issues associated with
computer apply practice the role workers mention?
В Ipij Heed once more and consummate these extracts.
one Get a good chair, one that.......................................... your lower back and is
2 Make sure your feet balance firmly........................................ or on a footrest.
3 Position the keyboard .............................................. your elbows, with your arms
___ __ ......i............................... the work surface ...
4 ... position the monitor at, or only below,..........................................
5 Yous should sit at________________________ from the front of the monitor, about fifty to lxx
centimetres away.
half-dozen ... a kind of stand up that lets you move the monitor ....................................... , and so you can use it
at the correct bending and height.
С Match the extracts above (one-six) with the correct parts of the diagram (a-f).
Ergonomics - the study of how people interact safely and efficiently with machines and their work conditions
Language work: instructions and advice
Look at the Assistance box and then complete these wellness and safety guidelines withshould/shouldn't.
1 If you type a lot at your computer each
twenty-four hour period, you lot........................... purchase an ergonomic
keyboard; it can aid reduce the take chances of repetitive strain injury.
2 You..................... identify your mouse
inside like shooting fish in a barrel attain and support your forearm.
3 If you decide to build your own PC, protect yourself from electric shocks. You
____________ touch any components
unnecessarily.
4 You____________ always use a
copyholder if you lot are working from
• Nosotros use the imperative to give instructions. Become an adaptable chair.
Don't put your monitor in front of a window.
• We utilize should and shouldn't + infinitive to give advice or to talk most what we think is a proficient or bad idea.
You should await downwards at the monitor, not up.
You shouldn't use a monitor that'south fuzzy or distorts the prototype.
• Nosotros tin can also give advice by using set phrases like It's a good idea to or It's a bad thought to
+ infinitive.
Instructions and advice
Information technology's a practiced idea to have a monitor with a tilt- and-swivel stand.
documents.The all-time position is between the screen and the keyboard, or at the same height as the screen; this can reduce neck, back and eyestrain.
Irresponsible disposal of electronic waste matter can cause severe environmental and wellness problems. You lot merely throw your onetime monitor or video system into the bin.
В IWl In pairs, practise giving advice about how to use a monitor safely using should/shouldn't orInformation technology's a good/bad idea to. Look at these guidelines for assist.
1 Don't open the monitor. Information technology's dangerous.
2 Don't stare at the screen for long periods of time.
three Position the monitor at eye level or just below.
iv Go out enough infinite behind the monitor for unobstructed movement.
5 Don't sit near the sides or back of CRT monitors. Use LCD screens instead - they're costless from radiations.
six Go along the screen make clean to prevent distorting shadows.
An ergonomic school or office
You have been asked to write a list of guidelines for making your school or function more than ergonomic. Expect at the definition of ergonomics at the lesser of folio 35 and then write an email to your teacher/managing director explaining your guidelines. Consider 1-eight beneath.
1 Physical layout of the work site: desk-bound areas, calculator equipment, filing cabinets, etc.
2 Lighting (overhead lights, desk lamps), glare and ventilation
three Computer and office furniture: ergonomic chairs and desks
4 User-friendly and ergonomic devices: keyboards, mice, monitors, wrist rests, copyholders, etc.
v Location and features of telephones
6 Layout of cables and switches for a wired network
7 Wireless internet admission and wireless network
8 Maintenance and technical repairs
Types of printer
How many types of printer can you think of? Brand a list.
Read the article on page 38 and then label the types of printer (1-5). Which types of printer aren't pictured?
The quality (resolution) of the images goes upwardly to 2,400 dots per inch (dpi)
1_________________
Provides high quality output: a resolution of 1,200-2,400 dpi
The resolution depends on the number of pins
3________________
Provides the highest resolution: more three,000 dpi
SHOULD I BUY?
Printing is the concluding phase in creating a document. Since the results you can obtain with dissimilar types of printer volition vary essentially, hither is a guide to help you lot decide which 1 is nearly suitable for your needs.
To begin with, you should take into account that printers vary in toll, speed, impress quality, and other factors such equally noise or printing method. Technology is evolving and so speedily that in that location is e'er a printer for every application or need.
Dot-matrix printers use pins to print the dots required to shape a character. They tin print text and graphics; however, they produce relatively depression resolution output — 72 to 180 dots per inch (dpi).They are used to print multi-office forms, self-copying paper and continuous-grade labels.They are slower than laser printers (see beneath) only much cheaper.
Inkjet printers operate by projecting small ink droplets onto paper to form the required image. Colour and hues are created by the precise mixing of cyan, magenta, yellowish and blackness inks. Inkjets are fairly fast, quiet, and not equally expensive as laser printers. Nevertheless, you can all the same expect loftier quality results considering there are some inkjet printers on the market with a resolution of 2,400 dpi.
Laser printers produce output at great speed and with a very loftier resolution of one,200—ii,400 dpi. They scan the epitome with a laser beam and transfer it to paper with a special ink powder called toner. They are constantly being improved. In terms of speed and image quality, laser printers are preferred by experts for diverse reasons; for instance, they have a wider range of scalable fonts than inkjets, can emulate different linguistic communication systems, and tin can produce high- quality graphics; even so, they are nevertheless expensive for home users.
Thermal transfer printers are used to produce colour images by transferring a wax-based ink onto the paper.They are pop for printing bar codes, labels and medium-resolution graphics.
Imagesetters produce very high-resolution output (up to iii,540 dpi) on newspaper or on the actual flick for making the printing plates. In improver, they are extremely fast. Imagesetters are about frequently used in desktop publishing (DTP). Although they produce the highest quality output, they take one important disadvantage: they are as well expensive for homes or pocket-size offices.
In modernistic lithographic printing, images are created on a DTP computer and and then output straight to the printing plates, without requiring moving-picture show every bit an intermediate step. This technology is called computer to plate, or CTP, and the machine used is called a platesetter.
Finally, we take plotters. Plotters use ink and fine pens held in a railroad vehicle to draw very detailed designs on paper. They are used for construction plans, applied science drawings and other technical illustrations. Nowadays, traditional plotters are beingness replaced with wide-format inkjets.
Observe words in the article with the following meanings.
ane designs and images used in magazines, books, etc. (lines ten-xv)________
two output quality, measured in dots per inch (lines 10-15)................
3 a detail colour within the color spectrum (lines 15-20)__________
four an ink pulverization used in laser printers and copiers (lines 25-30)................
5 ready of characters that tin can exist resized (enlarged or reduced) without introducing baloney (lines 30-35) ____________________
6 a rectangular pattern of black lines of magnetic ink printed on an object so that its details can be read by a calculator arrangement (lines 35-40) .................................................
7 surface that carries a reproduction of the prototype, from which the pages are printed (lines 45-50)
eight in-between; middle (lines 50-55)..................
Language work: connectors one
ALook at the Help box and then put the words in italics from the article on page 38 into the correct column of the table.
| Giving examples | Listing/Sequencing | Giving reason/crusade |
ВTry to add some more connectors to each column. How do you say these connectors in your language?
Connectors 1
Connectors are linking words and phrases which bring together ideas and aid us organize our writing. Connectors can exist used for giving examples, listing or sequencing, and giving reason or cause.
for instance, they have a wider range of...
To begin with, you lot should take into account that printers vary in cost...
In pairs, draw the features of your ideal printer.
Some common connectors appear in italics in the commodity on page 38. For more than on other uses of connectors, see Unit eleven.
С ьШWrite a paragraph describing the printer(s) you use at home or at work. Effort to use some connectors. Think about these aspects: type, speed, resolution, impress quality, memory, cost, print consumables (ink cartridges etc.).
Choosing the right printer
API In pairs, choose the most suitable printer for each of these situations. Requite reasons for your choices.
1 You desire to print documents, spider web pages and occasional photographs at dwelling house.
ii A pocket-size company needs a printer which will exist shared by various users on a local area network (LAN).
3 A professional person team of architects and engineers demand to create accurate representations of objects in technical drawings and CAD.
iv A graphic arts business needs a printer to produce catalogues, brochures and other publications.
Multi-function printers
A yjy Listen to an extract from a consumer engineering science podcast about multi-function printers. What two disadvantages of multi-part printers are mentioned?
L. Mind once again and answer these questions.
one What is a multi-function printer?
2 Why are multi-function printers so popular?
3 What is the main advantage of PictBridge engineering science?
4 Apart from sheets of newspaper, what other things tin can multi-office printers print?
five What software exercise you normally get when you buy a multi-function printer?
Comparatives
• We form the comparative of one- syllable adjectives by adding -er. slow —slower
6 What advice does Mr Kelly requite on ink cartridges?
Inkjet printers are slower than laser printers, but much cheaper 2-syllable adjectives usually take more than/less.
7 What type of device does he recommend for home users?
8 What type of device does he recommend for businesses?
Language work: comparatives
Expect at the Help box and so complete these sentences using the comparative form of the describing word in brackets.
1 A laser printer is mostly (quiet)
................................ than a low-cost inkjet
printer.
2 Multi-function printers are now only slightly
(expensive)................................ than
conventional printers, and offer much (neat) versatility.
iii The print quality of this network printer is
noticeably (good)__________________ than
any inkjet, and as (skilful)..............................
as similar laser printers.
4 The Agfa platesetter is (reliable)
..................... _............... and (easy)
................................ to use than about printers
of its blazon.
Your printer is only as (good)
................................ as the newspaper y'all use.
The concluding result is ever (authentic) than the original image.
An imagesetter is (heavy)............................ _...
than a laser printer.
■ more modern
They're designing a more modern version at the moment.
Adjectives ending in -y (for case, noisy) take -er and the у changes to i.
Dot-matrix printers are noisier than inkjets.
Nosotros class the comparative of adjectives with 3 or more syllables by adding more/less
versatile —>- more versatile
... they're cheaper and more versatile than standalone products.
Notation the irregular forms:
good —► improve bad —>■ worse little —► less
If you want better results, yous'll need specialized software.
Equality is expressed past using as every bit. Difference can be shown by using not as as
This is as fast as many other printers in its class.
Inkjets are not as expensive equally laser printers.
б Reading quiz - printer adverts
AIn pairs, read the adverts and so answer these questions. See who in your grade can end first.
1How many Inkjet printers are advertised?
twoWhich printer would you recommend to someone who wants to impress ad graphics?
3If you accept the wide-format printer from Vutek, what kinds of material tin yous print on?
4Which technology lets you print directly from your digital camera without needing a computer in between?
5A page description linguistic communication, or PDL, describes how to print the text and pictures on the page. Can you find ii laser printer languages?
half dozenWhat is the resolution of the Brother HL Network Colour Light amplification by stimulated emission of radiation Printer?
7How fast is the Brother HL Network Colour Light amplification by stimulated emission of radiation Printer?
Canon Compact Photograph Printer SELPHY CP750 Photo Printer
An inkjet photograph printer with a 2.4" colour LCD for easy viewing, editing and printing of perfect borderless photos. With PictBridge, you can print directly from digital cameras, memory cards or camera phones (via IrDA or optional Bluetooth unit of measurement) without connecting to a PC.
Resolution: 300x300 dpi
Software: Piece of cake-PhotoPrint
Dimensions: 179x127.1x63 mm
The Vutek UltraVu II5330 provides the ultimate combination of highest
print speed and best impress quality in a v-metre printer.
5 Broad-format professional inkjet printer
• Prints on a wide variety of substrates, including vinyl, and pressure- sensitive paper, mesh and textiles
• VUTEK Low Friction Kit allows for hard materials to exist run more easily
• Prints up to sixteen.4 feet (5 metres) wide
• Upwards to 330 dpi resolution produces images that are sharp, well-baked and consistent
• Prints up to two,230 square anxiety (207 square metres) per hour
• Applications: banners, exhibition graphics, bus shelters, etc.
Brother HL Network Colour Light amplification by stimulated emission of radiation Printer
The HL-4040CN delivers the perfect rest of quality, workgroup, colour A4 light amplification by stimulated emission of radiation printing.
Print Speed: up to 31 ppm (pages per minute) mono, 8 ppm colour (A4) Compatibility: PCL and PostScript languages Paper tray capacity: 250 sheets Retentiveness size: 64MB Loftier-speed USB
Information technology boasts outstanding color output: 2,400 dpi form colour printing with uncommonly well-baked, high-resolution text and graphics driven by Blood brother'south exclusive printing enhancement technologies.
В yfyA friend has emailed you request for communication most which printer to buy, the Canon SELPHY CP750 or the Brother HL Network Colour Laser Printer. Write an e-mail to your friend comparison the ii printers. Employ the Aid box on folio 40 to assist you.
"issil^
9Devices for the disabled
Assistive engineering
A Chiliad In pairs, look at the words in the box and use as many of them as you can to describe the photos. You will not need all the words.
adapted keyboard on-screen keyboard voice recognition system screen-pointing device screen reader
bullheaded person motor-dumb person screen magnifier Braille printer adaptive switch touch screen
pneumatic switch (sip and puff)
Devices for the disabled
iV-^one In pairs, discuss these questions.
one What sort of difficulties do you recall are experienced by calculator users with limitations of vision or mobility?
2 What types of device could exist helpful to blind users?
3 How tin a person with mobility limitations communicate with a computer?
Computers for the disabled
ARead the text and detect the following.
1 the laws which ensure equal opportunities for people with disabilities in the USA and the Great britain
ii how the blind student in the photograph interacts with the machine
3 the systems which blazon on the screen what is being said in meetings
4 the type of software which reads printed material, recognizes the text and then sends information technology to the PC
five the system which is activated by the user's heart movements
6 the switch which can be used by someone with quadriplegia
seven the function of vocalism recognition devices
Displays, frequently called monitors or screens, are the
most-used output device on a reckoner.They provide instant feedback by showing you text and graphic images as yous work or play.
Most desktop displays use Liquid Crystal Display (LCD) or Cathode Ray Tube (CRT) engineering, while nearly all portable computing devices, such as laptops, contain LCDs. Because of their slimmer design and lower energy consumption, LCD monitors (also called flat panel or flat screen displays) are replacing CRTs.
Bones features
Resolution refers to the number of dots of color, known as pixels (picture show elements), contained in a brandish. It is expressed by identifying the number of pixels on the horizontal and vertical axes. A typical resolution is 1024x768.
A pixel is a combination of cherry-red, green and blueish subpixels
Ii measurements depict the size of your brandish: the aspect ratio and the screen size. Historically, figurer displays, like almost televisions, have had an aspect ratio of 4:3 - the width of the screen to the height is four to three. For widescreen LCD displays, the aspect ratio is 16:9, very useful for viewing DVD movies, playing games and displaying multiple windows side by side. High- definition TV likewise uses this format.The viewable screen size is measured diagonally, and so a 19"screen measures xix" from the top left to the bottom right.
Inside the estimator in that location is a video adapter, or graphics carte du jour, which processes images and sends signals to the monitor. CRT monitors utilize a VGA (video graphics adapter) cablevision, which converts digital signals into analogue signals. LCD monitors employ a DVI (digital video interface) connection.
Color depth refers to the number of colours a monitor can display. This depends on the number of bits used to describe the color of a single pixel. For case, an old VGA monitor with an 8-bit depth tin can generate 256 colours and a SuperVGA with a 24-bit depth can generate 16.7 million colours. Monitors with a 32-bit depth are used in digital video, blitheness and video games to go sure effects.
Brandish technologies
An LCD is made of ii glass plates with a liquid crystal material between them. The crystals block the light in different quantities to create the image. Active-matrix LCDs use TFT (thin film transistor) technology, in which each pixel has its own switch. The amount of light the LCD monitor produces is called brightness or luminance, measured in cd/mii (candela per square metre).
A CRT monitor is similar to a traditional Telly. It contains millions of tiny ruby-red, dark-green and blue phosphor dots that glow when struck by an electron beam that travels across the screen and create a visible image.
PCs tin be connected to video projectors, which projection the image onto a big screen. They are used for presentations and abode theatre applications.
In a plasma screen, images are created by a plasma discharge which contains noble (non-harmful) gases. Plasma TVs allow for larger screens and broad viewing angles, making them ideal for movies.
Organic Light-Emitting Diodes (OLEDs) are thin-film LED displays that don't crave a backlight to function. The material emits lite when stimulated by an electrical electric current, which is known equally electroluminescence.They consume less energy, produce brighter colours and are flexible - i.e. they tin can be bent and rolled up when they're not existence used.
Choosing the correct display device
aE Heed to five customers in a computer shop describing their display device needs. Which device (a-e) would y'all recommend to each person? In pairs, talk over your choices and give reasons for them.
Speaker 1________________________ Speaker 4____________________________
Speaker 2________________________ Speaker 5____________________________
Speaker 3________________________
Widescreen 24" flat console Resolution: 1920x1200 Colour support: sixteen.7 million Multiple video inputs, flash- card slots and USB ports
NEC MultiSyn LCD Monitor Screen size: 17"
Resolution: 1280x1024 (SXGA) Aspect ratio: 5:4 Brightness: 400 cd/mtwo
Dell UltraSharp LCD monitor
Cambridge- Hitachi interactive whiteboard Allows interaction with a projected figurer prototype Board size: 78" Continued to the PC via USB Pointing device: cordless pen
Pioneer 50" Plasma Television receiver Resolution: 1280x768 (XGA) Blu-ray Disc recorder 5.one surround audio organization (Five audio channels plus one subwoofer)
Portable projector
DLP (Digital Light Processing) technology
Resolution: 1024x768
Projection screen
В Irll In pairs, discuss which of the display devices you would well-nigh like to own. Requite reasons for your choice.
Display screens and ergonomics
4 Ergonomics
A BLi Listen to Tony Clark, an skillful in computer ergonomics, talking to some
office workers about wellness and safety. What wellness problems associated with
figurer utilize practise the part workers mention?
В Ipij Listen over again and complete these extracts.
one Get a proficient chair, one that.......................................... your lower dorsum and is
ii Make certain your anxiety residuum firmly........................................ or on a footrest.
3 Position the keyboard .............................................. your elbows, with your arms
___ __ ......i............................... the piece of work surface ...
iv ... position the monitor at, or just beneath,..........................................
5 You should sit down at________________________ from the front of the monitor, well-nigh 50 to 70
centimetres away.
6 ... a kind of stand that lets you motion the monitor ....................................... , so you lot can use it
at the correct angle and height.
С Match the extracts above (1-half-dozen) with the correct parts of the diagram (a-f).
Ergonomics - the study of how people interact safely and efficiently with machines and their piece of work conditions
Language piece of work: instructions and communication
Look at the HELP box and then complete these health and safety guidelines withshould/shouldn't.
1 If you type a lot at your computer each
day, you........................... buy an ergonomic
keyboard; it can aid reduce the risk of repetitive strain injury.
ii You..................... place your mouse
within easy reach and support your forearm.
3 If you determine to build your own PC, protect yourself from electric shocks. You
____________ touch any components
unnecessarily.
four You____________ e'er employ a
copyholder if you are working from
• Nosotros apply the imperative to give instructions. Get an adjustable chair.
Don't put your monitor in front of a window.
• Nosotros use should and shouldn't + infinitive to give advice or to talk virtually what we recall is a expert or bad idea.
You should await down at the monitor, not upwards.
You shouldn't use a monitor that's fuzzy or distorts the paradigm.
• We can likewise give communication by using set phrases like Information technology's a expert idea to or Information technology's a bad thought to
+ infinitive.
Instructions and advice
It's a good idea to accept a monitor with a tilt- and-hinge stand.
documents.The best position is betwixt the screen and the keyboard, or at the same height every bit the screen; this tin can reduce neck, back and eyestrain.
Irresponsible disposal of electronic waste can cause severe environmental and wellness issues. You lot just throw your old monitor or video system into the bin.
В IWl In pairs, practise giving communication almost how to employ a monitor safely using should/shouldn't orIt's a good/bad idea to. Look at these guidelines for assistance.
1 Don't open the monitor. It's dangerous.
2 Don't stare at the screen for long periods of time.
three Position the monitor at eye level or just below.
4 Leave enough space behind the monitor for unobstructed move.
v Don't sit near the sides or back of CRT monitors. Utilise LCD screens instead - they're costless from radiations.
vi Keep the screen make clean to forbid distorting shadows.
An ergonomic school or office
Y'all take been asked to write a list of guidelines for making your school or office more than ergonomic. Expect at the definition of ergonomics at the bottom of page 35 and then write an e-mail to your teacher/managing director explaining your guidelines. Consider 1-8 below.
1 Concrete layout of the work site: desk areas, figurer equipment, filing cabinets, etc.
ii Lighting (overhead lights, desk lamps), glare and ventilation
three Figurer and office furniture: ergonomic chairs and desks
4 Convenient and ergonomic devices: keyboards, mice, monitors, wrist rests, copyholders, etc.
5 Location and features of telephones
half dozen Layout of cables and switches for a wired network
7 Wireless internet access and wireless network
8 Maintenance and technical repairs
Types of printer
How many types of printer can you think of? Make a listing.
Read the commodity on page 38 and then label the types of printer (ane-5). Which types of printer aren't pictured?
The quality (resolution) of the images goes up to ii,400 dots per inch (dpi)
1_________________
Provides high quality output: a resolution of 1,200-2,400 dpi
The resolution depends on the number of pins
3________________
Provides the highest resolution: more than iii,000 dpi
SHOULD I Purchase?
Press is the final stage in creating a certificate. Since the results you can obtain with different types of printer will vary substantially, here is a guide to assist you determine which one is about suitable for your needs.
To begin with, y'all should take into business relationship that printers vary in cost, speed, print quality, and other factors such as noise or printing method. Technology is evolving so apace that there is e'er a printer for every application or need.
Dot-matrix printers apply pins to print the dots required to shape a character. They can print text and graphics; however, they produce relatively low resolution output — 72 to 180 dots per inch (dpi).They are used to print multi-function forms, self-copying paper and continuous-class labels.They are slower than laser printers (see below) only much cheaper.
Inkjet printers operate by projecting small ink droplets onto paper to form the required image. Color and hues are created by the precise mixing of cyan, magenta, yellowish and black inks. Inkjets are adequately fast, quiet, and not as expensive as laser printers. Nevertheless, you can even so expect high quality results because there are some inkjet printers on the market with a resolution of ii,400 dpi.
Light amplification by stimulated emission of radiation printers produce output at nifty speed and with a very high resolution of i,200—2,400 dpi. They scan the image with a light amplification by stimulated emission of radiation beam and transfer it to newspaper with a special ink pulverisation called toner. They are constantly being improved. In terms of speed and epitome quality, laser printers are preferred by experts for diverse reasons; for case, they have a wider range of scalable fonts than inkjets, can emulate different language systems, and can produce loftier- quality graphics; however, they are still expensive for home users.
Thermal transfer printers are used to produce colour images by transferring a wax-based ink onto the paper.They are popular for press bar codes, labels and medium-resolution graphics.
Imagesetters produce very high-resolution output (upward to 3,540 dpi) on paper or on the actual picture show for making the press plates. In addition, they are extremely fast. Imagesetters are most often used in desktop publishing (DTP). Although they produce the highest quality output, they have one important disadvantage: they are besides expensive for homes or minor offices.
In modernistic lithographic printing, images are created on a DTP figurer and so output straight to the printing plates, without requiring film as an intermediate step. This engineering is called calculator to plate, or CTP, and the machine used is chosen a platesetter.
Finally, we have plotters. Plotters use ink and fine pens held in a wagon to describe very detailed designs on paper. They are used for construction plans, engineering drawings and other technical illustrations. Nowadays, traditional plotters are being replaced with broad-format inkjets.
Notice words in the commodity with the following meanings.
1 designs and images used in magazines, books, etc. (lines 10-15)________
2 output quality, measured in dots per inch (lines 10-15)................
3 a detail colour within the colour spectrum (lines 15-20)__________
4 an ink powder used in laser printers and copiers (lines 25-xxx)................
five set up of characters that can be resized (enlarged or reduced) without introducing baloney (lines thirty-35) ____________________
half-dozen a rectangular blueprint of blackness lines of magnetic ink printed on an object then that its details tin can exist read by a computer system (lines 35-40) .................................................
seven surface that carries a reproduction of the image, from which the pages are printed (lines 45-l)
eight in-betwixt; centre (lines 50-55)..................
Language work: connectors 1
ALook at the HELP box and then put the words in italics from the article on page 38 into the correct column of the table.
| Giving examples | List/Sequencing | Giving reason/crusade |
ВTry to add together some more connectors to each column. How do you say these connectors in your linguistic communication?
Connectors 1
Connectors are linking words and phrases which join ideas and assist united states of america organize our writing. Connectors can be used for giving examples, listing or sequencing, and giving reason or cause.
for case, they have a wider range of...
To begin with, you lot should take into account that printers vary in cost...
In pairs, describe the features of your platonic printer.
Some common connectors appear in italics in the article on page 38. For more on other uses of connectors, see Unit eleven.
С ьШWrite a paragraph describing the printer(south) y'all use at home or at work. Try to use some connectors. Think most these aspects: blazon, speed, resolution, print quality, memory, cost, impress consumables (ink cartridges etc.).
Choosing the right printer
API In pairs, choose the most suitable printer for each of these situations. Requite reasons for your choices.
1 Y'all want to print documents, web pages and occasional photographs at habitation.
2 A small company needs a printer which volition be shared past various users on a local area network (LAN).
3 A professional person team of architects and engineers need to create accurate representations of objects in technical drawings and CAD.
4 A graphic arts concern needs a printer to produce catalogues, brochures and other publications.
Multi-role printers
A yjy Heed to an extract from a consumer technology podcast well-nigh multi-function printers. What two disadvantages of multi-function printers are mentioned?
Fifty. Mind again and answer these questions.
1 What is a multi-function printer?
ii Why are multi-function printers so popular?
3 What is the main reward of PictBridge technology?
iv Apart from sheets of newspaper, what other things tin multi-function printers print?
5 What software do yous usually become when you buy a multi-role printer?
Comparatives
• We form the comparative of 1- syllable adjectives past adding -er. tedious —slower
half dozen What advice does Mr Kelly requite on ink cartridges?
Inkjet printers are slower than laser printers, merely much cheaper Two-syllable adjectives usually take more/less.
7 What type of device does he recommend for home users?
eight What type of device does he recommend for businesses?
Language work: comparatives
Look at the Assistance box and then complete these sentences using the comparative form of the adjective in brackets.
ane A laser printer is mostly (serenity)
................................ than a low-price inkjet
printer.
two Multi-function printers are now only slightly
(expensive)................................ than
conventional printers, and offering much (nifty) versatility.
3 The print quality of this network printer is
noticeably (practiced)__________________ than
any inkjet, and as (good)..............................
as like laser printers.
iv The Agfa platesetter is (reliable)
..................... _............... and (easy)
................................ to use than near printers
of its type.
Your printer is simply as (good)
................................ equally the paper you apply.
The final result is always (accurate) than the original prototype.
An imagesetter is (heavy)............................ _...
than a laser printer.
■ more than modern
They're designing a more modern version at the moment.
Adjectives ending in -y (for example, noisy) have -er and the у changes to i.
Dot-matrix printers are noisier than inkjets.
We form the comparative of adjectives with 3 or more syllables by adding more/less
versatile —>- more versatile
... they're cheaper and more versatile than standalone products.
Note the irregular forms:
skillful —► improve bad —>■ worse piffling —► less
If y'all want ameliorate results, you'll demand specialized software.
Equality is expressed by using as equally. Deviation can be shown by using non as as
This is every bit fast as many other printers in its class.
Inkjets are not as expensive as laser printers.
б Reading quiz - printer adverts
AIn pairs, read the adverts and and then answer these questions. See who in your class can finish first.
1How many Inkjet printers are advertised?
2Which printer would you lot recommend to someone who wants to print advertising graphics?
3If you have the wide-format printer from Vutek, what kinds of material tin can y'all print on?
4Which technology lets you impress directly from your digital camera without needing a figurer in between?
5A folio clarification language, or PDL, describes how to print the text and pictures on the page. Can you detect ii laser printer languages?
6What is the resolution of the Blood brother HL Network Color Laser Printer?
7How fast is the Brother HL Network Colour Laser Printer?
Catechism Compact Photograph Printer SELPHY CP750 Photo Printer
An inkjet photograph printer with a two.4" colour LCD for easy viewing, editing and press of perfect borderless photos. With PictBridge, you can print straight from digital cameras, memory cards or camera phones (via IrDA or optional Bluetooth unit) without connecting to a PC.
Resolution: 300x300 dpi
Software: Like shooting fish in a barrel-PhotoPrint
Dimensions: 179x127.1x63 mm
The Vutek UltraVu II5330 provides the ultimate combination of highest
print speed and best impress quality in a five-metre printer.
5 Broad-format professional inkjet printer
• Prints on a wide variety of substrates, including vinyl, and pressure- sensitive paper, mesh and textiles
• VUTEK Low Friction Kit allows for difficult materials to exist run more than hands
• Prints up to 16.4 feet (5 metres) wide
• Up to 330 dpi resolution produces images that are sharp, well-baked and consistent
• Prints upwardly to 2,230 square feet (207 foursquare metres) per 60 minutes
• Applications: banners, exhibition graphics, double-decker shelters, etc.
Brother HL Network Colour Laser Printer
The HL-4040CN delivers the perfect balance of quality, workgroup, colour A4 laser printing.
Impress Speed: up to 31 ppm (pages per minute) mono, eight ppm colour (A4) Compatibility: PCL and PostScript languages Paper tray chapters: 250 sheets Retention size: 64MB High-speed USB
It boasts outstanding color output: 2,400 dpi class colour printing with uncommonly crisp, high-resolution text and graphics driven past Brother'due south sectional printing enhancement technologies.
В yfyA friend has emailed yous asking for advice about which printer to purchase, the Catechism SELPHY CP750 or the Blood brother HL Network Color Laser Printer. Write an e-mail to your friend comparing the ii printers. Employ the Aid box on page forty to aid yous.
"issil^
9Devices for the disabled
Assistive technology
A One thousand In pairs, wait at the words in the box and use as many of them every bit y'all can to draw the photos. You will not need all the words.
adapted keyboard on-screen keyboard vocalization recognition organization screen-pointing device screen reader
blind person motor-dumb person screen magnifier Braille printer adaptive switch impact screen
pneumatic switch (sip and puff)
Devices for the disabled
iV-^1 In pairs, hash out these questions.
1 What sort of difficulties do you call up are experienced by figurer users with limitations of vision or mobility?
2 What types of device could be helpful to blind users?
three How can a person with mobility limitations communicate with a figurer?
Computers for the disabled
ARead the text and find the following.
one the laws which ensure equal opportunities for people with disabilities in the USA and the U.k.
2 how the blind student in the photo interacts with the machine
3 the systems which type on the screen what is being said in meetings
4 the blazon of software which reads printed cloth, recognizes the text and so sends it to the PC
5 the arrangement which is activated by the user's eye movements
6 the switch which can exist used by someone with quadriplegia
7 the part of voice recognition devices
Source: https://studopedia.ru/15_64038_How-screen-displays-work.html
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