2. Data or instructions entered into the computers are called
Input
Input device is any hardware component that allows users to
enter data and issuing instructions (commands) to a computer
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3. Keyboards
Pointing devices
Scanners
Image capture devices
Audio capture
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4. Most common input
device. Ch#2 Page #
55
Keyboard consists of
Navigation keys
Alphabetic keys
Numeric keys
Special purpose
keys
Function keys
Windows key
11/21/2012 Designed by Prof. Anosha Khan PGC 4
5. Used to control the movement of Cursor/Pointer on
the screen and issuing commands.
Mouse
Track ball
Touch pad
Pointing Stick
Touch Screen
Light pen
Joy Stick
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6. It is a Pointing device that fits under palm of
hand
Mechanical
Optical
Cordless
or wireless
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7. Stationary pointing
device with a ball
on its top or side
To move pointer,
rotate ball with
thumb, fingers, or
palm of hand
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8. Touchpad is small, flat, rectangular pointing
device sensitive to pressure and motion
Move finger across surface of pad to move
cursor
Tap the surface to select
Used in Laptops
11/21/2012 Designed by Prof. Anosha Khan PGC 8
9. Pointing stick is pointing device
shaped like pencil eraser
positioned between keys on
keyboard
Move with fingers
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10. Touch areas of screen with
finger to give commands
Special monitor
Screen layer with
crisscrossed beams of
infrared light
Select by touching screen
directly
ATM machines use Touch
Screen
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11. Light Pen- Handheld input device that can detect light
Press light pen against screen surface and then press
button on pen
Digital Pen- Looks like a ballpoint pen, but uses
pressure to write text and draw lines
Used with graphics tablets, flat electronic boards
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12. Explore Game
Controllers
Read Lesson
2B , Page # 76
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13. The process of entering input by speaking
into a microphone
Voice recognition is the computer’s capability
of distinguishing spoken words
MIDI (musical instrument digital interface)
External device, such as electronic piano
keyboard, to input music and sound effects
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14. 11/21/2012 Designed by Prof. Anosha Khan PGC 14
15. Allows you to take
digital pictures
Images viewable
immediately on
camera
Download to
computer
Post pictures
to Web
Page # 83
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16. Sharpness and clarity of image
The higher the resolution, the better the image
quality, but the more expensive the camera
Pixel (picture element)
is single point in
electronic image
Greater the number of
pixels, the better the
image quality
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17. Process of entering full-motion
images into computer
Video capture card is adapter card that
converts analog video signal into digital signal
that computer can use
Digital video (DV) camera records video as
digital signals
Lesson 2B , page#82
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18. Web cam is used to capture
video and still images, send
e-mail messages with video
attachments, add live
images to instant messages,
broadcast live images over
the Internet, and to make
video telephone calls on
Internet
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19. Two or more geographically
separated people who use network or
Internet to transmit audio and video
data
Whiteboard is another window on
screen that can display notes and
drawings
simultaneously on
all participants’ screens
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20. Light-sensing device that
reads printed text and
graphics
Used for image
processing, converting
paper documents into
electronic images
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21. 11/21/2012 Designed by Prof. Anosha Khan PGC 21
22. Device that uses light source to read characters,
marks, and codes and then converts them into
digital data
Optical character recognition (OCR) reads
characters in
OCR font
Optical mark recognition (OMR) reads hand-
drawn pencil marks, such as small circles
Bar Code Reader use laser beam to read bar
codes
Bar codes are verticals lines having
description about the product
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23. Can read text printed with magnetized ink
Banking industry almost exclusively uses MICR for
check processing
Point of sale (POS) terminal
Records purchases, processes credit or debit cards, and
updates inventory
Swipe credit or debit card through card reader or use your
fingerprint
Reads customer’s personal data from magnetic strip
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24. Authenticates person’s identity by verifying personal
characteristic
Finger print reader
Voice verification
Signature Verification
Home Task
Explore input devices for
Physically challenged persons
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