Computer Input Units PART-2 Prepared by: Aswa thy C Follow me: https://unacademy.com/user/aswathyC
Scanner Converts Documents & Images into Digital format Types of Scanners Flat bed Scanner Hand Held Scanner
OCR Optical Character Reader Reading text from paper and translating the images >Converts to ASCII form ASCII Full form American Standard Code for Information Interchange each letter assigned a number from 0 to 127
OMR * Optical Mark Reader * Used for Objective type exams MICR * Magnetic Ink Character Recognition Used in Banks for processing Cheque * Special Ink contains: Iron Oxide
BCR * Bar Code Reader * Used to read Barcodes * Code Consist of light & Dark lines * Father of Barcode Reader Norman Joseph Woodland
Microphone Mic converts received sound into Digital Format QR Code Quick Response Code Biometric Used to read finger print, retina etc
Important Input Devices * Keyboard ^ Mouse * Light pen * Joystick * Trackball * Touch Pad * Scanner * OCR & MICR * QR Code * BCR
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