Output devicesOutput devices

keyboardkeyboard

Keep this directly Keep this directly in front of you and in front of you and within easy reach.within easy reach.

Monitor screenMonitor screen

Keep this level whit Keep this level whit your eyes . Don’t your eyes . Don’t have it level with have it level with the desk . Make the desk . Make sure it is flicker-sure it is flicker-free and that you free and that you can read can read everything easily . everything easily . Avoid any glare Avoid any glare from the window.from the window.

lamplamp

Make sure this Make sure this lights your work lights your work and not the screen.and not the screen.

copyholdercopyholder

Don’t get a stiff Don’t get a stiff neck . Use this neck . Use this when you enter a when you enter a lot of data.lot of data.

chairchair

This should be This should be adjustable and adjustable and provide good back provide good back support.support.

footrestfootrest

Use this if your feet Use this if your feet do not rest flat on do not rest flat on the floor.the floor.

printerprinter

This should be This should be more than a meter more than a meter away form you and away form you and as quiet as as quiet as possible.possible.

PrintersPrintersTypeTypePrint Print

qualitqualityy

speedspeedRunning Running costs costs

Noise Noise levellevel

pricepricecoloucolourr

Dot-Dot-matrixmatrix

lowlowslowslowcheapcheapnonocheapestcheapestnono

inkjetinkjetslowslowRelatively Relatively slowslow

expensiveexpensivequietquietA bit moreA bit moreyesyes

laserlaserbestbestfastfastexpensiveexpensivequietquietToo muchToo much

Read a monitors adRead a monitors ad

pricepriceThe price mainly depends on the screen The price mainly depends on the screen size. Common monitor sizes are 14-size. Common monitor sizes are 14-inch, 17-inch, 17-inch, and 21-inch.the inch, 17-inch, 17-inch, and 21-inch.the price also depends on aperture grill price also depends on aperture grill pitch, resolution, and the number of pitch, resolution, and the number of controls.controls.

Screen sizeScreen size

The size of the screen is the diagonal The size of the screen is the diagonal distance form one corner to another. distance form one corner to another. The actual area for images is smaller The actual area for images is smaller than this.than this.

Aperture grill pitchAperture grill pitch

This controls the space between the dots This controls the space between the dots which make up the image. The less space which make up the image. The less space the dots. The better the display. Most the dots. The better the display. Most monitors offer 0.28mm dot pitch but some monitors offer 0.28mm dot pitch but some go as high as 0.31mm or as low as go as high as 0.31mm or as low as 0.25mm.0.25mm.

Maximum resolutionMaximum resolution

The quality of the display depends on The quality of the display depends on the number of dots which make up the number of dots which make up the image. The more dots, the better the image. The more dots, the better the display. the display.

Refresh rateRefresh rate

The monitor refreshes the image on the The monitor refreshes the image on the screen all the time. The faster this screen all the time. The faster this happens, the less the screen flickers. happens, the less the screen flickers. You should have a refresh rate of at You should have a refresh rate of at least 72Hzleast 72Hz

Safety standardsSafety standards

These are international standards to These are international standards to control harmful signals.control harmful signals.

Power-saving featurePower-saving feature

The power the monitor uses The power the monitor uses automatically reduces when it is not automatically reduces when it is not in use.in use.

On-screen menuOn-screen menu

Digital controls on the screen allow Digital controls on the screen allow you to adjust the image.you to adjust the image.

Type of printerType of printer Dot-matrix

Mono laser

Colour inkjet

Mono inkjet

Colour laser

Work in pairs. Study this flowchart Work in pairs. Study this flowchart for choosing a printer. Decide for choosing a printer. Decide

which is the best kind of printer for which is the best kind of printer for these usersthese users..

1-print forms with two parts 1-print forms with two parts 2-print high quality black and white 2-print high quality black and white

copiescopies 3-print a lot of co lour photos in a 3-print a lot of co lour photos in a

short time short time 4-print a few copies_ colour and 4-print a few copies_ colour and

speed are not importantspeed are not important 5-print a few pages in colour 5-print a few pages in colour

1-matrix 1-matrix printerprinter

2-mono laser2-mono laser 3-laser 3-laser

printerprinter 4-mono 4-mono

printerprinter 5-inkjet 5-inkjet

printerprinter

Someone who needs to:

Do you need to print on multi-part forms

yes

no

Buy a dot-matrix printer.

Do you need to print in colour?

Do you need a fast printer

Buy a colour laser printer.

Are print speed or quality important?

Buy a mono laser printer.

Buy a colour inkjet printer

Buy a mono inkjet printer.

yes yes

yes

no

no

no

Fill in the gaps in this Fill in the gaps in this comparison of printers?comparison of printers?

There are three different types of printer: dot-There are three different types of printer: dot-matrix, inkjet, and laser. Dot-matrix printers are matrix, inkjet, and laser. Dot-matrix printers are the ………kind of printer,the ………kind of printer,

………………their print quality is low and they are slow their print quality is low and they are slow and ………they are ………to run.and ………they are ………to run.

Inkjets are ………expensive, but you get ………Inkjets are ………expensive, but you get ………quality and quieter operation. However, they are quality and quieter operation. However, they are relatively ………and also ………to run. They are a relatively ………and also ………to run. They are a good choice for colour.good choice for colour.

Laser printers give the ………quality of output. Laser printers give the ………quality of output. They print ………than either of the tow ………of They print ………than either of the tow ………of printer and they cost ………to run than inkjet. printer and they cost ………to run than inkjet. Unfortunately, they ………almost twice as ………Unfortunately, they ………almost twice as ………as an inkjet. as an inkjet.

There are three different types of printer: dot-There are three different types of printer: dot-matrix, inkjet, and laser. Dot-matrix printers are matrix, inkjet, and laser. Dot-matrix printers are the the cheapestcheapest kind of printer, kind of printer,

ButBut their print quality is low and they are slow their print quality is low and they are slow and and noisynoisy they are they are cheapcheap to run. to run.

Inkjets are Inkjets are moremore expensive, but you get expensive, but you get qualityquality quality and quieter operation. However, they are quality and quieter operation. However, they are relatively relatively slowslow and also and also expensiveexpensive to run. They to run. They are a good choice for colour.are a good choice for colour.

Laser printers give the Laser printers give the bestbest quality of output. quality of output. They print They print fasterfaster than either of the tow than either of the tow typestypes of of printer and they cost printer and they cost lessless to run than inkjet. to run than inkjet. Unfortunately, they Unfortunately, they costcost almost twice as almost twice as muchmuch as as an inkjet. an inkjet.

Name of the schoolboys

1-ahmed kheiame

2-fahd aljehani