Input and Output Devices

Question 1

What are the three stages of data input?

Answer 1

1. Input devices
2. CPU - Central processing unit
3. Output devices
   + If data is to be stored the process includes the storage, whether HDD or SDD.

Question 2

What is the use of the keyboard?
What is a CLI?

Answer 2

1. Inputting data into applications
2. ## Typing commands into a CLI interface.A CLI Is a command-line interface

Question 3

Advantages and Disadvantages of a Keyboard

Answer 3

Advantages: Easy and familiar to use
Fast entry of text into a
document
————————
Disadvantages: Slower method compared
to direct data entry.

Question 4

Use of Numeric keypad
What does ATM stand for?
What does POS Stand for?
What is the chip and pin?

Answer 4

Inputting numeric data into:
-POS terminals
-ATM
-Chip and pin
-Mobile phones
ATM: automated teller machine
POS: point of sale
Chip and pin: microchip generally used in payment

Question 5

Advantages and disadvantages of Numeric keypad

Answer 5

Advantages: Straightforward at entering numeric data
Disadvantages: Keys can be too small

Question 6

Use of the mouse

Answer 6

Control and position the mouse pointer on the screen to:
-select windows
-click icons
-menu options

Question 7

Advantages and disadvantages of the mouse.

Answer 7

Advantages: easy to navigate through the
menu options
quicker to select an option
when compared to the
keyboard.
—————————
Disadvantages: Easily damaged
Flat surface required

Question 8

Use of the touchpad

Answer 8

Used as a pointing device in laptops

Question 9

Advantages and disadvantages of the touchpad

Answer 9

Advantages: part of the keyboard so no
need for a separate device
—————————
Disadvantages: More difficult to use compared to a regular mouse

Question 10

Use of the tracker ball
What is RSI?

Answer 10

Used by users who tend to
have limited motility in
their wrist
——————-
(RSI) Repetitive strain injury

Question 11

Advantages and Disadvantages of the Tracker Ball

Answer 11

Advantages: Easier to use compared to
mouse
More accurate positing of the
pointer
————————–
Disadvantages: Tend to be expensive

Question 12

Use of the remote control

Answer 12

Used to control:
* TV Channels and Menu
options
* Multimedia Systems

Question 13

Advantages and disadvantages of remote control

Answer 13

Advantages: Can be used from a distance.
Disadvantages: Signal could be blocked by obstacles or walls.

Question 14

Use of the joystick

Answer 14

Used in computer games
and simulators.

Question 15

Advantages and Disadvantages of the joystick

Answer 15

Advantages: easier to use compared to a keyboard.
Disadvantages: More difficult to use
compared to a normal
mouse.

Question 16

Use of the driving wheel

Answer 16

Used by gamers in computer games (Racing/Driving).
Used in simulators.

Question 17

Advantages and disadvantages of the driving wheel

Answer 17

Advantage: Driving experience is
more accurate than using
keyboards.
————————
Disadvantage: More expensive

Question 18

Use of camera

Answer 18

Can record video footage

Question 19

Advantages and disadvantages of the camera

Answer 19

Advantage: Can record in HD footage can be
edited on a computer.
————————-
Disadvantage: HD movies take up a lot of
storage.
The cost of a camera is high

Question 20

Use of microphone

Answer 20

Used to input sound into a
computer.
Used in voice recognition
applications.

Question 21

Advantages and disadvantages of the microphone

Answer 21

Advantages: Recorded audio can be typed
directly into Word
Processor applications.
——————————-
Disadvantages: Voice recognition is not as accurate as typing text into a computer.

Question 22

Use of touchscreen

Answer 22

Used on:
* Mobile/Tablets
* Point of Sale (POS)
* Interactive White Boards

Question 23

Advantages and disadvantages of the touchscreen

Answer 23

Advantage: Very easy to use
and select
options.
——————————–
Disadvantage
* Options
could be
selected
accidentally
* Screen
can get
dirty.

Question 24

Use of scanners

Answer 24

Used to scan in documents
or photographs.

Question 25

Advantages and disadvantages of scanners

Answer 25

Advantages: Copies can be created.
Disadvantages: Quality is dependent on
resolution settings.

Question 26

Use of digital cameras

Answer 26

Used to take photographs
and small video clips.
Data can be transferred to
computers.

Question 27

Advantages and disadvantages of digital cameras

Answer 27

Advantages Higher-resolution images can be stored on memory cards.
Disadvantages: Transferring, storing and editing images can be complicated.