uses of all

Question 1

Keyboard

Answer 1

• Entering data manually into
  a computer
• Typing in commands to a
  computer[

Question 2

Numeric
Keypad

Answer 2

• At POS terminals in case the
  barcode reader fails to read
  the barcode
• Chip and PIN devices when
  paying by credit/debit
  cards

Question 3

Pointing
device:
mouse

Answer 3

• Controls the position of an
  on-screen pointer to allow
  selection, open/close files
  and so on

Question 4

Pointing
device:
touchpad

Answer 4

• Similar to mouse but uses
  a flat panel below the
  keyboard on a laptop
  computer

Question 5

Pointing
device:
trackerball

Answer 5

• Used in control rooms
  where desk space is at a
  premium
• Used in luxury cars to
  select functions such as
  operating the GPS,
  allowing use of
  smartphone and so on

Question 6

Remote
control

Answer 6

• Televisions, satellite
  systems, DVD/Blu-ray
  players and Hi-Fi systems
  all use remote controls to
  alter functions such as
  sound volume, on/off,
  change channels, open the
  disc drawer, and so on

Question 7

Pointing
devices:
Joystick and
driving
wheel

Answer 7

• Used in video/computer
  games.
• Used in simulators

Question 8

Touchscreen

Answer 8

• Computer-based training
• Self-service tills,

Question 9

Scanner

Answer 9

• Scan in barcodes at POS
  terminals
• Archiving of valuable old
  manuscripts

Question 10

Digital
Camera

Answer 10

• Taking photographs or
  videos
• A data capture devices

Question 11

Microphone

Answer 11

• Used in video conferencing
• As a sensor to pick up
  sounds

Question 12

Analogue
Sensors

Answer 12

• Measures physical data
  from the environment and
  send it to a computer

Question 13

Light pen

Answer 13

• Drawing on screen (for
  example, with CAD
  packages)
• Selecting the objects on a
  CRT screen