Chapter 2: Input and Output devices

Question 1

1. List all the manual input devices.

Answer 1

• keyboard
• mouse
• touchpad
• tracker ball
• remote control
• joystick
• driving wheel
• touchscreen
• scanner
• digital camera
• video camera
• microphone

Question 2

2. What are the 3 types of keyboards?

Answer 2

1. ergonomic keyboards
2. concept keyboards
3. numeric keypads

Question 3

3. Define each type of keyboard, their uses and the advantages and disadvantages.

Answer 3

-> Ergonomic keyboards
- design to reduce the health-related problems such as repetitive strain injury (RSI)
- to enter text, number, some symbols
— Advantages:
> easy to use for most people
> fast data entry
— Disadvantages:
> can be difficult to use if the user has limited arm use

-> Concept keyboard
- concept keyboard uses icons or phrases
- it is useful in restaurant environment

-> Numeric keypads
- it is used to enter numbers only
— Uses:
> ATM (Automatic teller machine)
> POS (Point of scale)
> Chip and PIN devices
— Advantages:
> faster than standard keyboard
> easy to carry around
— Disadvantages:
> have small keys

Question 4

4. What are the 3 types of pointing devices?

Answer 4

• mouse
• touchpad
• tracker ball

Question 5

5. What are the 2 types of mouse?

Answer 5

• optical mouse
• wireless mouse

Question 6

6. List all the uses, advantages and disadvantages of each type of pointing device.

Answer 6

-> Mouse
- optical mouse
- wireless mouse
— Uses: To control the pointer on the screen to:
: selecting windows
: clicking icons
: menu options
: positioning pointer
— Advantages:
: easy to navigate through menu options
: quicker to select an option compared to using a keyboard
— Disadvantages:
: easily damaged
: flat surface required

-> Touchpad
— Advantages:
: it is integrated into the laptop, there is no need for a seperate mouse
— Disadvantages:
: difficult to use when doing certain operations such as drag and drop

-> Tracker ball
— Uses:
: used in control room/luxury cars
: used for people with limited wrist movement
— Advantages:
: easier to use
: robust than mouse
— Disadvantages:
: not supplied with computer as standard

Question 7

7. What is a remote control?

Answer 7

It is used to control the operations of other devices remotely

Question 8

8. What are the uses, advantages and disadvantages of a remote control?

Answer 8

— Uses:
: TV
: DVD players
: Air conditioner
— Advantages:
: can be operated from any reasonable distance
— Disadvantages:
: it is easier to block the signal
: difficult to use for people with limited wrist movement

Question 9

9. What are the uses, advantages and disadvantages of a joystick/driving wheel?

Answer 9

— Uses:
: Computer games
: Flight simulators
: Car-driving simulation
— Advantages:
: control is more realistic than mouse
: driving experience is neaer to the actual steering wheel
— Disadvantages:
: difficult to control on-screen pointer
: expensive