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

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

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

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                                                                

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

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

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.

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

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                                

©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

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.

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

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