How Many Pages Can Be Printed With One Hp Ink Cartridge
Displays, oftentimes called monitors or screens, are the
most-used output device on a computer.They provide instant feedback past showing you lot text and graphic images as you work or play.
Most desktop displays use Liquid Crystal Display (LCD) or Cathode Ray Tube (CRT) technology, while near all portable computing devices, such as laptops, incorporate LCDs. Because of their slimmer design and lower energy consumption, LCD monitors (also chosen flat console or apartment screen displays) are replacing CRTs.
Basic features
Resolution refers to the number of dots of color, known as pixels (flick 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 red, green and bluish subpixels
Two measurements describe the size of your brandish: the aspect ratio and the screen size. Historically, figurer displays, similar most televisions, have had an aspect ratio of 4:3 - the width of the screen to the peak is four to iii. For widescreen LCD displays, the aspect ratio is 16:nine, very useful for viewing DVD movies, playing games and displaying multiple windows side by side. Loftier- definition Boob tube also uses this format.The viewable screen size is measured diagonally, and then a 19"screen measures 19" from the acme left to the bottom right.
Within the computer there is a video adapter, or graphics card, which processes images and sends signals to the monitor. CRT monitors utilize a VGA (video graphics adapter) cable, which converts digital signals into analogue signals. LCD monitors use a DVI (digital video interface) connexion.
Colour depth refers to the number of colours a monitor can brandish. This depends on the number of bits used to depict the color of a single pixel. For case, an old VGA monitor with an 8-bit depth 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, animation and video games to get certain effects.
Display technologies
An LCD is made of two glass plates with a liquid crystal material between them. The crystals block the low-cal in dissimilar quantities to create the image. Agile-matrix LCDs use TFT (thin pic transistor) technology, in which each pixel has its ain switch. The amount of light the LCD monitor produces is called brightness or luminance, measured in cd/chiliad2 (candela per square metre).
A CRT monitor is similar to a traditional Tv set up. Information technology contains millions of tiny red, light-green and blueish phosphor dots that glow when struck by an electron axle that travels beyond the screen and create a visible image.
PCs tin can exist 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 by a plasma belch which contains noble (non-harmful) gases. Plasma TVs let for larger screens and wide viewing angles, making them platonic for movies.
Organic Light-Emitting Diodes (OLEDs) are thin-flick LED displays that don't require a backlight to function. The material emits light when stimulated by an electrical current, which is known equally electroluminescence.They consume less energy, produce brighter colours and are flexible - i.e. they can be bent and rolled up when they're not being used.
Choosing the correct display device
aE Listen to five customers in a computer shop describing their display device needs. Which device (a-e) would you 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 panel Resolution: 1920x1200 Colour support: xvi.7 1000000 Multiple video inputs, flash- menu slots and USB ports
NEC MultiSyn LCD Monitor Screen size: 17"
Resolution: 1280x1024 (SXGA) Aspect ratio: five:four Effulgence: 400 cd/kii
Dell UltraSharp LCD monitor
Cambridge- Hitachi interactive whiteboard Allows interaction with a projected computer image Board size: 78" Connected to the PC via USB Pointing device: cordless pen
Pioneer l" Plasma Television Resolution: 1280x768 (XGA) Blu-ray Disc recorder 5.1 surround sound system (V sound channels plus one subwoofer)
Portable projector
DLP (Digital Light Processing) technology
Resolution: 1024x768
Project screen
В Irll In pairs, talk over which of the brandish devices yous would most like to ain. Give reasons for your choice.
Display screens and ergonomics
iv Ergonomics
A BLi Listen to Tony Clark, an expert in figurer ergonomics, talking to some
office workers about health and safety. What health bug associated with
computer utilise practise the part workers mention?
В Ipij Mind again and consummate these extracts.
1 Go a good chair, one that.......................................... your lower back and is
2 Brand certain your feet rest firmly........................................ or on a footrest.
three Position the keyboard .............................................. your elbows, with your artillery
___ __ ......i............................... the work surface ...
4 ... position the monitor at, or merely beneath,..........................................
5 You should sit at________________________ from the front end of the monitor, about 50 to 70
centimetres away.
6 ... a kind of stand that lets you move the monitor ....................................... , so you can utilize it
at the correct angle and height.
С Match the extracts above (1-6) with the right parts of the diagram (a-f).
Ergonomics - the report of how people interact safely and efficiently with machines and their work conditions
Linguistic communication work: instructions and advice
Look at the HELP box and and then complete these wellness and safety guidelines withshould/shouldn't.
1 If you type a lot at your computer each
day, you........................... buy an ergonomic
keyboard; information technology tin can assist reduce the risk of repetitive strain injury.
two Yous..................... identify your mouse
within 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
____________ bear upon any components
unnecessarily.
4 You____________ always apply a
copyholder if you are working from
• We use the imperative to give instructions. Get an adjustable chair.
Don't put your monitor in front of a window.
• We use should and shouldn't + infinitive to give advice or to talk nearly what we think is a proficient or bad idea.
You lot should wait downwardly at the monitor, non up.
You lot shouldn't use a monitor that's fuzzy or distorts the image.
• We can likewise give advice by using set up phrases like It'south a good idea to or Information technology'south a bad idea to
+ infinitive.
Instructions and advice
It's a skillful idea to have a monitor with a tilt- and-swivel stand up.
documents.The best position is between the screen and the keyboard, or at the same height as the screen; this tin can reduce neck, back and eyestrain.
Irresponsible disposal of electronic waste material tin crusade severe ecology and health problems. You but throw your old monitor or video arrangement into the bin.
В IWl In pairs, practise giving advice about how to use a monitor safely using should/shouldn't orIt's a good/bad idea to. Look at these guidelines for help.
1 Don't open the monitor. It'south dangerous.
2 Don't stare at the screen for long periods of time.
iii Position the monitor at heart level or just below.
4 Leave 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 gratis from radiations.
half dozen Keep the screen clean to forbid distorting shadows.
An ergonomic schoolhouse or part
You take been asked to write a list of guidelines for making your school or office more ergonomic. Expect at the definition of ergonomics at the bottom of page 35 and then write an e-mail to your teacher/manager explaining your guidelines. Consider 1-8 below.
1 Physical layout of the work site: desk areas, computer equipment, filing cabinets, etc.
2 Lighting (overhead lights, desk lamps), glare and ventilation
3 Computer and office furniture: ergonomic chairs and desks
iv 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
seven Wireless internet access and wireless network
eight Maintenance and technical repairs
Types of printer
How many types of printer can you recollect of? Make a list.
Read the article on page 38 and then label the types of printer (i-five). 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 than than 3,000 dpi
SHOULD I Buy?
Printing is the terminal phase in creating a document. Since the results yous can obtain with dissimilar types of printer will vary substantially, here is a guide to help you lot make up one's mind which one is most suitable for your needs.
To begin with, you lot should take into business relationship that printers vary in toll, speed, print quality, and other factors such equally racket or printing method. Technology is evolving so apace that in that location is always a printer for every application or need.
Dot-matrix printers use pins to print the dots required to shape a grapheme. They tin impress text and graphics; nevertheless, they produce relatively low resolution output — 72 to 180 dots per inch (dpi).They are used to print multi-role forms, self-copying paper and continuous-form labels.They are slower than laser printers (run into below) merely much cheaper.
Inkjet printers operate by projecting small ink droplets onto paper to form the required image. Color and hues are created past the precise mixing of cyan, magenta, yellowish and black inks. Inkjets are fairly fast, quiet, and not as expensive equally light amplification by stimulated emission of radiation printers. Still, you tin can still expect high quality results because there are some inkjet printers on the market with a resolution of 2,400 dpi.
Laser printers produce output at swell speed and with a very high resolution of 1,200—two,400 dpi. They scan the paradigm with a light amplification by stimulated emission of radiation beam and transfer it to paper with a special ink pulverization called toner. They are constantly beingness improved. In terms of speed and image quality, laser printers are preferred by experts for various reasons; for instance, they have a wider range of scalable fonts than inkjets, tin can emulate different linguistic communication systems, and can produce high- quality graphics; still, they are nonetheless expensive for home users.
Thermal transfer printers are used to produce color images by transferring a wax-based ink onto the paper.They are pop for press bar codes, labels and medium-resolution graphics.
Imagesetters produce very high-resolution output (upwards to 3,540 dpi) on paper or on the actual moving-picture show for making the printing plates. In addition, they are extremely fast. Imagesetters are most frequently used in desktop publishing (DTP). Although they produce the highest quality output, they have ane important disadvantage: they are besides expensive for homes or small offices.
In modernistic lithographic printing, images are created on a DTP computer and so output directly to the printing plates, without requiring flick as an intermediate step. This engineering science is chosen computer to plate, or CTP, and the automobile used is called a platesetter.
Finally, we have plotters. Plotters use ink and fine pens held in a railroad vehicle to depict very detailed designs on paper. They are used for construction plans, technology drawings and other technical illustrations. Nowadays, traditional plotters are being replaced with broad-format inkjets.
Observe words in the article with the following meanings.
i designs and images used in magazines, books, etc. (lines 10-fifteen)________
2 output quality, measured in dots per inch (lines x-15)................
3 a particular colour inside the colour spectrum (lines 15-twenty)__________
4 an ink pulverisation used in light amplification by stimulated emission of radiation printers and copiers (lines 25-30)................
5 set of characters that can be resized (enlarged or reduced) without introducing distortion (lines thirty-35) ____________________
6 a rectangular design of black lines of magnetic ink printed on an object so that its details tin can be read past a computer arrangement (lines 35-xl) .................................................
vii surface that carries a reproduction of the epitome, from which the pages are printed (lines 45-50)
eight in-between; center (lines fifty-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 | Listing/Sequencing | Giving reason/cause |
ВEndeavor to add together some more connectors to each cavalcade. How do you say these connectors in your language?
Connectors 1
Connectors are linking words and phrases which join ideas and help us organize our writing. Connectors can exist used for giving examples, list or sequencing, and giving reason or cause.
for instance, they have a wider range of...
To begin with, you lot should have into account that printers vary in cost...
In pairs, depict the features of your ideal printer.
Some common connectors announced in italics in the article on page 38. For more on other uses of connectors, come across Unit 11.
С ьШWrite a paragraph describing the printer(s) you utilise at dwelling house or at work. Endeavour to use some connectors. Retrieve about these aspects: type, speed, resolution, print quality, retentivity, cost, print consumables (ink cartridges etc.).
Choosing the correct printer
API In pairs, choose the almost 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 home.
2 A small visitor needs a printer which will be 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.
four A graphic arts business organization needs a printer to produce catalogues, brochures and other publications.
Multi-part printers
A yjy Heed to an excerpt from a consumer technology podcast near multi-role printers. What two disadvantages of multi-office printers are mentioned?
L. Listen once again and answer these questions.
one What is a multi-role printer?
2 Why are multi-function printers so popular?
3 What is the chief advantage of PictBridge applied science?
4 Autonomously from sheets of paper, what other things can multi-role printers print?
five What software do you usually get when you buy a multi-function printer?
Comparatives
• Nosotros course the comparative of i- syllable adjectives by calculation -er. slow —slower
6 What advice does Mr Kelly requite on ink cartridges?
Inkjet printers are slower than laser printers, just much cheaper 2-syllable adjectives unremarkably take more/less.
7 What type of device does he recommend for home users?
viii What type of device does he recommend for businesses?
Language work: comparatives
Look at the HELP box and then complete these sentences using the comparative class of the adjective in brackets.
1 A laser printer is by and large (quiet)
................................ than a low-toll inkjet
printer.
2 Multi-function printers are now only slightly
(expensive)................................ than
conventional printers, and offering much (great) versatility.
three The print quality of this network printer is
noticeably (practiced)__________________ than
whatsoever inkjet, and as (good)..............................
as similar laser printers.
iv The Agfa platesetter is (reliable)
..................... _............... and (like shooting fish in a barrel)
................................ to utilise than most printers
of its type.
Your printer is only equally (good)
................................ as the newspaper you lot utilize.
The final result is ever (accurate) than the original image.
An imagesetter is (heavy)............................ _...
than a light amplification by stimulated emission of radiation printer.
■ more modern
They're designing a more modern version at the moment.
Adjectives catastrophe in -y (for case, noisy) take -er and the у changes to i.
Dot-matrix printers are noisier than inkjets.
Nosotros course the comparative of adjectives with three or more syllables by adding more/less
versatile —>- more versatile
... they're cheaper and more versatile than standalone products.
Note the irregular forms:
practiced —► amend bad —>■ worse picayune —► less
If yous want better results, you'll need specialized software.
Equality is expressed past using every bit as. Difference can be shown by using non as every bit
This is as fast equally many other printers in its grade.
Inkjets are not as expensive as light amplification by stimulated emission of radiation printers.
б Reading quiz - printer adverts
AIn pairs, read the adverts and then answer these questions. See who in your class tin finish first.
oneHow many Inkjet printers are advertised?
2Which printer would you recommend to someone who wants to print advertisement graphics?
3If yous accept the wide-format printer from Vutek, what kinds of textile can you print on?
4Which applied science lets you print directly from your digital camera without needing a figurer in betwixt?
5A page clarification linguistic communication, or PDL, describes how to print the text and pictures on the page. Can you find two light amplification by stimulated emission of radiation 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?
Canon Meaty Photo Printer SELPHY CP750 Photo Printer
An inkjet photo printer with a 2.4" color LCD for like shooting fish in a barrel viewing, editing and printing of perfect borderless photos. With PictBridge, you can print direct 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: 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 print quality in a five-metre printer.
5 Broad-format professional inkjet printer
• Prints on a broad variety of substrates, including vinyl, and pressure- sensitive newspaper, mesh and textiles
• VUTEK Depression Friction Kit allows for hard materials to be run more easily
• Prints up to sixteen.4 anxiety (5 metres) wide
• Up to 330 dpi resolution produces images that are abrupt, well-baked and consistent
• Prints up to 2,230 square feet (207 square metres) per hour
• Applications: banners, exhibition graphics, bus shelters, etc.
Brother HL Network Color Laser Printer
The HL-4040CN delivers the perfect rest of quality, workgroup, colour A4 laser printing.
Impress Speed: upwardly to 31 ppm (pages per infinitesimal) mono, eight ppm color (A4) Compatibility: PCL and PostScript languages Paper tray capacity: 250 sheets Retentiveness size: 64MB High-speed USB
It boasts outstanding colour output: two,400 dpi class colour printing with exceptionally crisp, high-resolution text and graphics driven by Blood brother'south exclusive printing enhancement technologies.
В yfyA friend has emailed y'all asking for advice about which printer to buy, the Catechism SELPHY CP750 or the Brother HL Network Colour Laser Printer. Write an email to your friend comparing the ii printers. Use the HELP box on page forty to help you.
"issil^
9Devices for the disabled
Assistive technology
A M In pairs, look at the words in the box and utilise every bit many of them equally you tin to describe the photos. Y'all will not need all the words.
adapted keyboard on-screen keyboard voice recognition arrangement screen-pointing device screen reader
blind person motor-dumb person screen magnifier Braille printer adaptive switch bear upon screen
pneumatic switch (sip and puff)
Devices for the disabled
iV-^1 In pairs, talk over 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 bullheaded users?
3 How can a person with mobility limitations communicate with a computer?
Computers for the disabled
ARead the text and observe the following.
1 the laws which ensure equal opportunities for people with disabilities in the USA and the UK
2 how the bullheaded student in the photo interacts with the machine
iii the systems which type on the screen what is being said in meetings
4 the blazon of software which reads printed material, recognizes the text and then sends it to the PC
5 the organization which is activated by the user's middle movements
6 the switch which tin be used by someone with quadriplegia
vii the office of vox recognition devices
Source: https://studopedia.ru/15_64038_How-screen-displays-work.html
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