Showing posts with label micr. Show all posts
Showing posts with label micr. Show all posts

Monday, March 20, 2017

Recognition Devices

Character and mark recognition devices are scanners that are able to recognize special characters and marks. Essentially used for certain applications.

Types

MICR (Magnetic Ink Character Recognition):
  • Used by banks to read numbers written on cheque.
  • Special purpose machine reads character made of ink containing magnetized particles.



OCR (Optical Character recognition):
  • Special preprinted characters that can be read by light source and changed into machine readable form.
  • Used in department stores to read retail price tags by reflecting light.



OMR (Optical Mark Recognition):
  • An OMR device senses the presence or absence of a mark such as pencil mark.
  • Used to calculate or store multiple choice tests.