Alternative Input Devices

Part B

There will be a test on this information (both part a & b).

Communications (Digital)

• Wireless communication is the ability to send data or video without being connected to a wire, either by telephone or handheld computer.

• Communications connectivity refers to a program device’s ability to link with other programs and devices.

Digital Camcorder• Produces video recordings with highly

accurate color and crisp clear resolution• The image can be saved as a data file.• View recordings on a regular TV or copy

them to VHS tape (Today can record directly to DVD-R or DVD-RW disk)

• Send MPEG video clips by way of e-mail to a mobile phone or PDA

• Immediate feedback from the LCD screen• Stores still images or short video clips on

flash memory card

Digital Camera• Resembles a traditional camera• Images are recorded and stored in digital form• Captured pictures are stored on floppy disk,

memory stick, smart media, or flash memory• Immediate feedback using a LCD screen • Images can be transferred into a word

document, e-mail, or posted on a web site

Scanners• Can read text printed on paper and transmit

the information into a form the computer can use and edit.

• If you printed a paper that you had written for your English class and noticed that you made some mistakes, how would you correct your mistakes if you did not save your file?

• Flatbed scanners and handheld scanners.

• Barcode scanners read bar codes that allow tracking of assets and inventory, checking items in, maintaining physical inventory and controlling fixed assets in a business.

Magnetic ScannerMagnetic Scanner

Photo andPhoto and Negative Negative ScannerScanner

Business Card Business Card ScannerScanner

Smart Cards• Contain electronic memory and

embedded memory

• Stores cash in digital form

• Stores patients medical records

• Used for government identification

• Found in mobile phones and vending machines

Media Storage

• Hard disk, flash drive, CD-ROM• Pen drive is another name for a USB flash drive.• Access is the act of reading data from or writing

to a storage device.• Fire wire devices (Drives) are very fast external

bus standards that support data transfer rates of up to 400 Mbps?

• A flash drive that is plugged into the USB port instantly gives an additional hard drive.

(floppy disk-old storage)

GPS• GPS uses reference points to calculate positions

accurate to a matter of meters. These points are called man-made stars.

• It is a worldwide radio-navigation system formed from a constellation of 24 satellites and ground stations.

• By using three satellites, it can calculate the longitude and latitude of the receiver based on where and how many spheres intersect.

• Satellite navigation system

• Help with driving directions

• Found in personal cars and emergency vehicles

Biometric Devices

• Authentication techniques for thumb prints, retina scan, and finger prints. (physical characteristics)

• Enhances security and privacy

• Widely used in business and industry

• Eliminates the need for passwords

Speech Recognition

• Speech recognition is the act of talking to a computer and the computer obeys the commands and translates the speech into written text.

•  A microphone that is attached to a headset allows the input sound into a computer.

PDA – Handheld Computers• A PDA is a portable computer small

enough to be held in one’s hand.

• It can be used to beam messages, read a book, keep track of appointments, and maintain a contact list.

• Stylus or touch screen used to input data

Notebook Computer

• Notebook is another name for laptop

• The principal difference between a notebook computer and a personal computer is portability.

• Plasma, high contrast, and LCD displays are used in flat screen monitors and portable computers.

Tablet

• A tablet can be written on with a special-purpose pen or stylus and then translate handwriting into text.

• Selections can be made on a touch screen using a pen, stylus, or finger.

WACOM Tablet

• To use for a signature

• To draw and/or edit pictures

Web Cam/Cell Phone/Web TV

• The Web camera broadcasts images through the Internet. 

• The cell phone also allows users to access the Internet by wireless communication.

• The Web TV is a small box with a keyboard that connects to a telephone line and television.

Probes• Probes are devices used by

scientists with a computer to translate data received.

•  Handwriting recognition uses a technique by a computer system to recognize characters and other symbols written by hand.

Questions

• Do you have any questions?

• Reminder: You are responsible for the information that has been covered.