1. INPUT DEVICES
Enter all your data: sounds, pictures, letters, numbers and
symbols.

2. INPUT DEVICE
 Any hardware component that allows a user
to enter data and instructions into a computer
for processing.
 Input: any data or instructions that are
entered into the computer.

3. TYPES OF INPUT DEVICES
 Pointing devices  Scanning devices
 Mouse  Scanners
 Trackball  Barcode readers
 Pointing stick  Magnetic ink character
 Touch pad recognition
 Joystick  Optical mark readers
 Light pen  Optical character
 Digitizing recognition
tablet/graphics tablets  Magnetic strip codes
 Smart cards

4. TYPES OF INPUT DEVICES
 Audio and Video  Other Input Devices
Input Devices  Biometric systems
 Digital Video Camera  Remote Control
 Voice recognition  Sensors
Keyboard – the most popular input
device!!

5. KEYBOARD
 The set of typewriter-like
keys that enables you to
enter data into a computer.
• The keys on computer
keyboards are often
classified as follows:
– Alphanumeric keys --
letters and numbers
– Punctuation keys --
comma, period, semicolon,
and so on.
– Special keys -- function
keys, control keys, arrow
keys, Caps Lock key, and so
on.

6. MOUSE
 A device that controls
the movement of the
cursor or pointer on a
display screen.
 There are TWO types
Can you spot the difference?
of mice MECHANICAL
and OPTICAL

7. TRACKBALL
 Essentially, a trackball  Compare with a mouse
is a mouse lying on its
back.
 What is the difference?

8. POINTING STICK
 Primarily found on
notebook computers
 It looks like a miniature
joystick, usually with a
rubber eraser-head tip.
 Found between the G,
H and B keys on the
keyboard

9. TOUCH PAD
 Is a mouse
replacement used in
portable computers
such as laptops

10. JOYSTICK
I’m sure you have used one of
 A device with a stick these to play you favourite
perpendicular to its computer or PS3 game.
Tell us some
base, as well as
buttons on the stick
and or on the base.
 Joysticks are used
mostly for computer
games, but they are
also used occasionally
for other applications.

11. LIGHT PEN
 An input device that  See how it writes
utilizes a light-sensitive directly on the screen!!
detector to select
objects on a display
screen.

12. DIGITIZING TABLET
 An input device that  Tablets are quite common
enables you to enter nowadays
drawings and sketches  Think Ipad, Kindle,
Samsung Galaxy...Kool!!
into a computer.
 A digitizing tablet
consists of an
electronic tablet and a
cursor or pen.

13. SCANNER
 Translates drawings,
photos and text into
digital form

14. BARCODE READER
 A device that scans a set
of bars and spaces
found on a variety of
sale items.
 The barcode brings up
product information such
as, product name, size,
brand, manufacturer,
country of origin and
price from the computer.

15. BARCODE READER
 Check the items your  Observe the clerk at the
mummy or daddy check out counter
place in the shopping  Does this scene look
familiar?
cart next time you
accompany them to  Can you share with the
class what happens?
the supermarket

16. MAGNETIC INK CHARACTER RECOGNITION
(MICR)
 MICR is used to read
and sort bank cheques
and deposit slips.
 The numbers at the
bottom of the cheque
are printed in magnetic
ink.
 The MICR is able to
read those numbers very
quickly and have the
information sent to a
computer for processing.

17. OPTICAL MARK READER (OMR)
 A device that reads
hand drawn marks
such as circles or
rectangles.
 A person places these
marks on a form such
as a test, survey or
questionnaire

18. OPTICAL MARK READER (OMR)
 Remember this??

19. OPTICAL CHARACTER RECOGNITION (OCR)
 This involves the
reading of text from
paper and translating it
into electronic format
for manipulation by a
computer

20. MAGNETIC STRIPE READER
 Magnetic stripes are
usually found at the back
of credit cards, loyalty
and membership cards
 They hold personal
details about the card
holder such as name,
account number and
loyalty points
 The card is swiped in the
reader and the
information fed to a
computer

21. SMART CARD
 A magnetic strip is
placed on a plastic
card containing
encoded data about
the owner of the card.
 The data is processed
by the computer when
the card is swiped.

22. DIGITAL CAMERA
 Allows users to take
pictures and store the
photographed images
digitally.
 Have you ever used
one of these?

23. WEB CAMERA (WEBCAM)
 A device that captures
video images

24. MICROPHONE
 A device that allows a
user to enter data in
Speak into
audio form.
me!!
 For example speech

25. BIOMETRIC READER
 A device that identifies  Examples of biometric
an individual through systems
their body
characteristics such as
face geometry and
hand geometry.
 For example,
fingerprint, iris or retina
scan, vein and voice
patterns.

26. BIOMETRIC READER
 Can you say what the word BIOMETRIC
means?
 Here’s a clue
 BIO: ___________________
 METRIC: ___________________

27. REMOTE CONTROL
 These emit a beam of
infra-red light which
carries digital data
signals.
 They are often used to
control TV's and
VCR's.
 More advanced
models can be
programmed to
transmit a series of
commands with one
button press.

28. SENSOR
 These detect changes in the physical or
chemical environment and convert them into
electrical signals. These signals can then be
digitised and used by the computer.
 They measure quantities such as light,
temperature and pressure

29. INPUT DEVICES – ASSESSMENT
 Can you now give an example of where each
device is used?
Device Use
Keyboard
Mouse
Trackball
Pointing stick
Touch pad
Joystick
Light pen
Digitizing tablet/graphics tablets

30. INPUT DEVICES – ASSESSMENT
Device Use
Digital Camera
Microphone
Webcam
Voice recognition
Biometric systems
Remote Control
Sensors