Input and Output Devices

Question 1

What layout does a standard keyboard use?

Answer 1

QWERTY

Question 2

What does EPOS stand for?

Answer 2

Electronic Point Of Sales

Question 3

What does ATM stand for?

Answer 3

Automatic Teller Machine

Question 4

Give an example of a keyboard that is designed for a specific application.

Answer 4

ATM

Question 5

What is a concept keyboard?

Answer 5

A keyboard that has keys with pictures or words which are programmed to carry out specific instructions.

Question 6

Give advantages of a keyboard.

Answer 6

Need little training, a skilled typist can enter data very quickly and often computers come with a keyboard supplied

Question 7

Give disadvantages of a keyboard

Answer 7

It is prone to human error since all data has to be keyed in, if you cannot touch type it can be time consuming to enter data and excessive use can lead to RSI.

Question 8

What does RSI stand for?

Answer 8

Repetitive Strain Injury

Question 9

What can a mouse be described as?

Answer 9

A ‘pointing device’

Question 10

Name 3 types of mouse

Answer 10

Infrared, mouse ball and wireless

Question 11

Give advantages of a mouse.

Answer 11

Easy to use, inexpensive and designed to fit under the human hand.

Question 12

State one disadvantage of a mouse.

Answer 12

Experienced users may find using a mouse slow, compared to using hot keys such as Crtl + P to print

Question 13

Give a use for a joystick

Answer 13

Playing flight simulators

Question 14

What does a joystick do as you manoeuvre it?

Answer 14

It senses movements and converts them into coordinates.

Question 15

Apart from the lever, describe the other functionality that a joystick has.

Answer 15

It has a range of buttons that can carry out specific, pre-programmed actions

Question 16

Give one advantage of a joystick

Answer 16

Provides a better experience when playing a flight simulator

Question 17

Give one disadvantage of a joystick

Answer 17

Can break easily, if too much force is used to manoeuvre it

Question 18

How does a tracker pad work?

Answer 18

It senses touch from a finger (it is touch sensitive)

Question 19

What is a tracker pad an alternative to?

Answer 19

A mouse for a laptop

Question 20

Give one advantage of a tracker pad

Answer 20

Useful for laptops when using a mouse is not practical

Question 21

Give two disadvantages of a tracker pad

Answer 21

Cannot be used while wearing gloves, for example in a sterilised environment, and it may not always accurately interpret a user’s movement.

Question 22

What type of screen is a touch screen more expensive than?

Answer 22

An LCD screen

Question 23

State one use of a touch screen.

Answer 23

In a fast food restaurant for inputting a customer’s order

Question 24

What is the main advantage of using a touch screen?

Answer 24

No additional hardware such as a keyboard or mouse is required

Question 25

Give an advantage of a microphone

Answer 25

Voice recognition is useful to users with limited mobility, who can use their voice instead of a keyboard.

Question 26

Give two disadvantages of a microphone

Answer 26

Background noise can interfere with spoken words, making it harder to use voice recognition applications. Software can also interpret spoken words incorrectly.

Question 27

What does OCR stand for?

Answer 27

Optical Character Recognition

Question 28

What input device uses OCR?

Answer 28

Scanner

Question 29

What does OCR do?

Answer 29

It converts written words on paper into text that can be edited on a word processor.

Question 30

Name the type of scanner commonly used in schools

Answer 30

Flatbed scanner

Question 31

Give two advantages of a flatbed scanner

Answer 31

Very accurate and can produce high quality images, and once digitised, images can be enhanced with a graphics application

Question 32

Give two disadvantages of a flatbed scanner

Answer 32

Images lose some quality during the scanning and digitising process, and images can take up a lot of memory space.

Question 33

Name two components of a digital camera

Answer 33

A memory card and LCD screen

Question 34

What is a megapixel?

Answer 34

One million pixels

Question 35

Give two advantages of a digital camera.

Answer 35

Images taken can be viewed on the LCD immediately, and images can be edited and enlarged

Question 36

Give two disadvantages of a digital camera.

Answer 36

They are generally more expensive than cameras which use film, and images often have to be compressed to avoid using too much memory.