1. Specialized Input Devices
Other types of input devices include:
Scanners
Styluses
Microphones
Digital cameras
Web cams

2. Scanner
                                                                   
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

3. Styluses
                                                                   
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

4. Microphones Microphones are used to input audio
                                                                   
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
                               
                               

5. 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

6. Web Cams
Web cam is a video camera that can be used to take images for uploading to the Web

7. Barcode Reader
An input device that converts a pattern of printed bars into a number that a computer can read. They are often used by businesses to quickly input price and product information.

8. Output Devices
Output devices take information within your computer and present it to you in a form that you can understand
Main output devices:
Monitors
Printers
Speakers

9. Printers Inkjet Laser Makes images by forcing droplets through nozzles
Top speed is 20 pages per minute
Laser
Forms images using an electrostatic process
Prints between 3 and 30 pages per minute
                               

10. ©2003 The McGraw-Hill Companies
Printers - Cont
Resolution of a printer is the number of dots per inch (dpi) it produces.
Higher the resolution, better the image, and usually the more costly the printer
                               
©2003 The McGraw-Hill Companies

11. 3D Printing A 3D printer is a type of industrial robot.
In 3D printing, additive processes are used, in which successive layers of material are laid down under
computer control.
A 3D printer is a type of industrial robot.

12. Printers - Cont. Multifunction printer: Scan, copy, fax, and print
Can be either inkjet or laser
Cost less than buying individual units
Take up less desk space

13. Speakers A speaker is a device that produces computer output as sound
Speakers are common devices in computer systems Examples include:
Built-in speaker
Two-device set speakers
Surround sound speakers