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INPUT DEVICES

INPUT DEVICES. TYPES OF INPUT DEVICES. Keyboard Systems Touch Screens Scanners Mouse Pointing Camera Voice Recognition Systems. KEYBOARD SYSTEMS. Used for Most up to date data & documents Typical applications: Airline Reservations On-line data entry Problem Repetitive stress injury.

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INPUT DEVICES

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  1. INPUT DEVICES Stephen W. Logan

  2. TYPES OF INPUT DEVICES • Keyboard Systems • Touch Screens • Scanners • Mouse • Pointing • Camera • Voice Recognition Systems

  3. KEYBOARD SYSTEMS • Used for Most up to date data & documents • Typical applications: Airline Reservations • On-line data entry • Problem • Repetitive stress injury

  4. TOUCH SCREENS • HEAT SENSITIVE • PRESSURE SENSITIVE

  5. TOUCH SCREEN Radio Station Touch Screen

  6. TOUCH SCREEN Main Screen (Scott’s System)

  7. SCANNING DEVICES • Optical Character Recognition (OCR) • Image Scanning • Optical Mark Recognition (OMR) • Magnetic Ink Character Recognition (MICR) • Bar Code Readers

  8. IMAGE SCANNING • Document Scanning (OCR Searches) • Image Reporting and Matching • Automated Fingerprint Matching • Track Welfare Recipients • Prevent double dippers who bilk system • All who apply will be finger print scanned • Takes picture of fingerprint • Stores it in AFIRM computer • Aid to Families with Dependent Children Recipients (Future Use)

  9. DIGITAL IMAGING • Scan paper documents • Store on CD-ROM • Allows Optical Character Recognition Searches • Case: 140,000 pages of legal documents, stored initially in 56 cardboard boxes • Scanned onto six (6) CD-ROM disks • Each disk is about size of a butter plate

  10. Welfare Cheats Targeted Double Dippers Targeted

  11. OPTICAL CHARACTER RECOGNITION • Utility Bills • Mail Handling • Speeded up mail handling for U.S. Postal Services • 800 pieces of mail per hour prior to OCR • 10,000 pieces of mail per hour with OCR

  12. OPTICAL MARK RECOGNITION • Test Scoring • Meter Reading (originally) • Market Research • Scouting (Sports)

  13. OPTICAL MARK RECOGNITION Testing

  14. OPTICAL MARK RECOGNITION Testing

  15. MAGNETIC INK RECOGNITION • Used by banks • Inscribe checks with banking ID numbers • Use a MICR inscriber • Processed at speeds up to 1200 documents per minute • Documents are sorted into different routing departments

  16. MICR Processing Checks

  17. BAR CODE READERS/SCANNERS • Supermarkets • Universal Product Code (UPC) • Industry • Track and control inventory • Provide production cycle information

  18. BAR CODES UPC

  19. BAR CODES Circuit Boards

  20. BAR CODES Printer Labels

  21. POINTING DEVICES • Mouse • Photo-Electric Pens • Activated when placed against screen • Terminal can identify location of pen • X & Y Coordinates • Used for graphics

  22. THE MOUSE

  23. THE MOUSE

  24. CAMERA • Digitize pictures • Store on CD-ROM's (Most Common) • Store on any secondary device • Digitized pictures can be: • Reviewed • Edited • Deleted • Saved • Printed

  25. VOICE RECOGNITION Guess Who !!

  26. VOICE RECOGNITION • Input unit that recognizes human voice sounds • Kempner Telephone Poll • Recognizes “Yes” Vs. “No” • Recognizes “Agree” Vs. “Disagree” • Recognized “Carter” Vs. “Reagan”

  27. VOICE RECOGNITION • Must distinguish complex speech patterns • Must distinguish complex grammatical patterns • Simple: Testing one, two, three • Complex: Write a letter to Mrs. Wright, right now.

  28. VOICE RECOGNITION • Advantages • User’s hands & eyes stay on work • Baggage routing airports • Audible counting • Machinery (Drill presses)

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