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INPUT DEVICES By: Fazal Rehman ( Shamil ) WWW.SHAMIL.PK Subject : ITC

INPUT DEVICES By: Fazal Rehman ( Shamil ) WWW.SHAMIL.PK Subject : ITC. CONTENT. KEYBOARD MOUSE TRACKBALL LIGHT PEN DIGITIZER JOYSTICK TOUCH SCREEN SCANNING DEVICES OCR OMR BCR MICR SPEECH RECOGNITION. KEYBOARD. NUMERIC Key PAD. FUNCTION KEYs.

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INPUT DEVICES By: Fazal Rehman ( Shamil ) WWW.SHAMIL.PK Subject : ITC

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  1. INPUT DEVICES By: FazalRehman (Shamil) WWW.SHAMIL.PKSubject : ITC

  2. CONTENT • KEYBOARD • MOUSE • TRACKBALL • LIGHT PEN • DIGITIZER • JOYSTICK • TOUCH SCREEN • SCANNING DEVICES • OCR • OMR • BCR • MICR • SPEECH RECOGNITION

  3. KEYBOARD NUMERIC Key PAD FUNCTION KEYs CURSOR MOVEMENT KEYs MODIFIER KEY AIPHANUMERIC KEY

  4. MOUSE A MOUSE IS A HANDHELD MOVE-ABLE INPUT DEVICE THAT CONTROL THE POSITION OF CURSOR ON THE SCREEN

  5. WORKING OF MOUSE

  6. OPTICAL MOUSE

  7. TRACK BALL TRACK BALL IS A POINTING DEVICE THAT USE A BALL TO POISTION THE CURSOR AND WORK LIKE A UPSIDE DOWN MOUSE

  8. LIGHT PEN

  9. JOYSTICK CLICK BUTTON STICK

  10. SCANNING DEVICES • SCANNING DEVICES ARE INPUT DEVICES USED FOR DIRECT DATA ENTRY IN TO A COMPUTER SYSTEM. 1.) IMAGE SCANNER FLATBED SCANNER HANDHELD SCANNER

  11. FLATBED SCANNER • A FLATBED SCANNER IS A COPIER MACHINE CONSIST OF A BOX HAVING A GLASS PLATE ON THE TOP AND LID THAT COVER THE GLASS PLATE.

  12. OPTICAL CHARACTER RECOGNITION • OCR IS USED TO CONVERT THE BITMAP IMAGES OF A CHARACTER INTO ASCII CODES OCR-A FONT OCR-B FONT

  13. OPTICAL MARK READER • OMR ARE USED TO RECOGNIZING A PRE-SPECIFIED TYPE OF MARK MADE BY PENCIL OR PEN.

  14. BAR CODE READER • DATA CODED IN THE FORM OF SMALL LINE ARE KNOWN AS BAR CODE.

  15. MAGNECTIC CHARACTER RECOGNITION • MICR IS SIMILAR TO OCR. USED IN BANKING INDUSTRY FOR FASTER PROCESSING OF A LARGE NUMBER OF CHEQUES DAILY.

  16. SPEECH RECOGNITION DEVICES • SPEECH RECOGNITION IS A INPUT DEVICE THAT ALLOW A PERSON TO INPUT DATA TO A COMPUTER SYSTEM BY SPEAKING TO IT. ITS CAN USED IN:- 1.) FOR DATA INPUT WHERE HAND ARE BUSY 2.)FOR DATA INPUT BY DICTATION OF LONG TEXT 3.)FOR AUTHENTICATION OF A USER.

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