Unit 2 Output Devices

Question 1

What is an output device?

Answer 1

Hardware devices that allow information to be sent out of a computer system - show the results of processing

Question 2

What are CRT (cathode ray tube) monitors used for?

Answer 2

instantly see outputs - monitor screen

Question 3

What are the advantages of CRT?

Answer 3

Can be used with a light pen
Produce a large range of colours
Have a good screen angle
Cheaper than other options

Question 4

What are the disadvantages of CRT?

Answer 4

Large and bulky
Create a lot of heat
Have a lot of screen glare
Use more power and therefore are more expensive to run

Question 5

What are TFT (thin film resistor) monitors used for?

Answer 5

instantly see outputs - monitor screen - thin, flat screen

Question 6

What are the advantages of TFT?

Answer 6

Lightweight
Very thin
Less glare
Uses less power
Emits less radiation
Emits less heat

Question 7

What are the disadvantages of TFT?

Answer 7

Images can be unclear
Lower picture quality
Cannot be used with light pens

Question 8

What are laser printers used for?

Answer 8

Use toner pressed onto a page to produce printed documents. Can print large amounts at a very quick rate.
Popular in schools, businesses and offices

Question 9

What are the advantages of laser printers?

Answer 9

Very fast at printing documents
Toner cartridges last a long time
Can handle high volumes of printing
Very quiet when printing
Very high quality print outs
Reliable
Cheaper to run than other printers

Question 10

What are the disadvantages of laser printers?

Answer 10

Environmentally unfriendly - produce ozone, use more power than inkjets
Laser printers are more expensive to buy
Larger in size

Question 11

What are the uses of Inkjet printers?

Answer 11

Produce high quality hard copies via an ink cartridge.

Question 12

What are the advantages of inkjet printers?

Answer 12

Out put is high quality
cheaper than laser printers
smaller than laser printers
Do not produce ozone
Quiet when printing

Question 13

What are the disadvantages of inkjet printers?

Answer 13

Slow printing rates
Ink cartridges don’t last long
Can be expensive to run
Printouts can easily smudge

Question 14

What are the uses of Dot Matrix Printers?

Answer 14

Produces an imprint on the paper by pins being pressed against an ink ribbon.

Question 15

What are the advantages of Dot Matrix Printers?

Answer 15

Work in environments where other printers might break
Carbon copies can be made
Very cheap
Good for continuous printing

Question 16

What are the disadvantages of Dot Matrix Printers?

Answer 16

Very noisy
Very slow
Very poor print quality

Question 17

What are the uses of a Plotter?

Answer 17

Produce hard copies on very large pieces of paper by using a flatbed or a drum, e.g. blue prints

Question 18

What are the advantages of using a Plotter?

Answer 18

Produce much larger printouts
Print quality is extremely high
Can cut out designs for sign making

Question 19

What are the disadvantages of using a Plotter?

Answer 19

Very slow

Very expensive

Question 20

What are the uses of speakers?

Answer 20

Produce sound - e.g listen to music, audio for films
Can be analogue or digital (uses a sound card)
Alters the volume of sounds

Question 21

What are the advantages of using speakers?

Answer 21

Everyone in the room can hear

Blind people can use the computer

Question 22

What are the disadvantages of using speakers?

Answer 22

Output can disturb people

High quality speakers can be expensive

Question 23

What are the uses of Multimedia Projectors?

Answer 23

Project whatever appears on a computer monitor onto a very large screen

Question 24

What are the advantages of using a multimedia projector?

Answer 24

Many people can see the same presentation

Enhances the viewers experience

Question 25

What are the disadvantages of using a multimedia projector?

Answer 25

Lower image quality
Expensive to buy
Cooling fans are noisy