input and output devices discription

2. INPUT DEVICES
•Input device captures information and translates it
into a form that can be processed and used by other parts of
your computer.
•Keyboards
•Pointing devices
•Game controllers
•Scanners
•Styluses
•Microphones
•Digital cameras
•Web cams
“p.5.130Fig.5-1

3. Types of Input Devices

4. KEYBOARD
• The keyboard is the most common input
device. Types of keyboards include:
•
•
• Wireless
Multimedia and one-touch access
Portable keyboards for PDAs

5. POINTINGDEVICES
•
•
Pointing devices are mainly used to choose and enter
commands
Types of pointing devices:
•
•
•
• Mouse
•Mechanical mouse
•Optical mouse
•Wireless mouse
Trackball
Touchpad
Pointing stick

6. JOYSTICK
•
•
Joystick are used mainly to play games .Types of
gaming devices
•
•
•
• Gamepads
Joysticks
Gaming wheels
Force feed

7. scanner
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•Scanner is a light sensitive device that helps you
copy or capture images, photos, and artwork
that exist on paper. Types of scanners include:
•Flatbed
➢SimNet Concepts Support CD: “Scanners”

8. STYLUSE
S
• Stylus is an input device consisting of a thin
stick that uses pressure to enter information
or to click and point
• Styluses are used with:
•PDAs
•Tablet PCs
•Graphics tablets
p.

9. microphones
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• Microphones are used to
input audio
• Three main types of
microphones are:
•Desktop microphones
•Headsets
•Directional microphones
• Speech recognition is
increasingly being included in
application software

10. Digital Cameras
• Digital cameras are used to:
•
•
•
Download images to a computer
Post pictures to the Web
Produce videos
•
•
Resolution is measured in megapixels
Higher the resolution, better the
image quality, but the more expensive
the camera

11. WEB CAMS
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• Web cam is a video camera that
can be used to take images for
uploading to the Web