1. Nick Gorton
Jace Sadowsky

2.  How data is received into a computer system,
and how information and the results of
processing are provided to the user from a
computer system.

3.  Used for taking data and entering it into a
computer system.
 Different types of input devices are designed to
accept different types of data.
 2 types of data are human readable data and
machine readable data.

4.  Automating data entry where the data is
created, thus ensuring accuracy and timeliness.
 Used by librarians, many rental car companies
and other professionals.
 Used to scan books and cars to collect data.

5.  A device that is made to be used for a variety
of computing activities.
 Keyboards, pointers, touch screens, multi-
touch displays and microphones are general
purpose input devices.

6.  Provide data input for one specific type of
activity.
 Game controllers, joysticks, webcams, page
scanners and handheld scanners are special
purpose input devices.

7.  Businesses and organizations use special-
purpose scanners and optical readers to collect
data.
 Card swipers are another way of collecting
data into a computer.
 Card swipers are used to verify the identity of
individuals wishing to access secure locations.

8.  Allows a user to see
the results of
computer processing
with one or more
senses.
 Good output devices
deliver information in
a manner that allows
the information to be
interpreted easily.

9.  Computer output
consists of data results
that are observable by
human senses or that
can be used as input
into another system.
 For example, iPod users
synchronize music from
their computer to the
iPod, with the output of
the computer acting as
input for the iPod.

10. VISUAL AUDIO
• Monitors
• Printed Documents
 Speakers
 Headphones

11.  Combine video processing and storage onto an
expansion card or onto the motherboard to
manage video images for display.
 Video cards provide important capabilities for
today’s graphics-intensive software.
 Also known as graphics cards.

12.  Video cards manage all images sent to a
computer’s display.
 Devices that use video cards include:
 Microsoft Windows Vista
 Mac OS X
 3D computer games

13.  Provides visual computer output on a monitor
or screen.
 The most common form of computer output is
visual on a display

14.  Cathode Ray Tube
(CRT)
 Older, bulkier
televisions
 Liquid Crystal Display
(LCD)
 Thin flat display using
liquid crystals
 Plasma Display
 plasma gas between
two flat panels to excite
phosphors and create
light

15.  Light Emitting Diode (LED)
 utilize LEDs to provide the backlight for the display
rather than the fluorescent light used in traditional
LCDs.
 Electronic Paper
 uses pixels made of particles or oils that reflect light
to resemble the pages of a book.

16.  provides a specific type of computer output on
paper or three-dimensional output in plastic.
 The different types of printers are
 Laser
 Ink-jet
 Photo
 Multifunction
 Plotters
 3D Printers

17.  Provide output to senses other than sight.
 Sound is used by the computer operating
system and other software to make the user
aware of certain events.

18.  Computer’s capacity to interface with external
devices by connecting through ports, slots, and
wireless technologies.
 Expansion allows computer users to enjoy
benefits beyond those provided by the
computer alone.

19.  Scanners
 Webcams
 Keyboards

20.  Any Questions?