What are the types of Optical Mark Reader

Answers:
OMR or optical mark reader integrates optical technology and electronics to do data inputs hundred times faster than manual entry methods and is extensively used in multiple choice examinations ,statistics,data input etc
The OMR types depends on

1.The accuracy needed

eg;In case of a question with four options out of which one is to be made black using pencil, if an option is more than 75% blackened ,modern OMRs will read it while first generation OMRs wont.

2.The cost

3.The security and anti tampering of data



The main parts include an OMR scanner and an OMR sheet printer and a data entry and transfer software.



There are mainly 3 types of OMRs.
1.OMRFD
2.OMRFBS
3.OMRFBD



Different compnaies like NANHAO,DEVOSOFT,AXIOME produce different versions of the above said version which cna range to upto 40 types of Optical Mark Readers

The difference among the three types lies in

1.The nature and dimensions of paper used for entry n scanning

2.The number of photoelectric sensors used and its efficiency (2,4)

3.The number of reading done for a single sheet for added accuracy( twice,thrice)

4.The size of the machine and software used.(windows based,linux based)

5.The barcode used(128,39,25)

6.Operating temperature and other parameters
ad
Relevant answers:
  • What is the definition for optical mark reader?
    hardware) Optical Mark Reader - (OMR) A special scanning device that can read carefully placed pencil marks on specially designed documents.
  • What is a Optical Mark Reader and advantage disadvantage of optical mark reader?
    It is a device designed to read answers placed on a form or document. We always called them Scan tron machines, because in school that is what the forms were called. Here is a little more complicated...
  • Disadvantages of an Optical Mark Reader?
    The software and hardware needed to set up OMR will be expensive.If paper gets creased or folded it would be hard to read.
  • Advantages of an Optical Mark Reader?
    It speeds up the process of reading marks on a piece of paper much faster than a human and stores it directly onto a database It speeds up the process of reading marks on a piece of paper much...
  • What is the use of optical character reader?
    An Optical Character Reader (OCR) is a combination of software and a hardware document scanner. A document (such as a letter) is scanned with a flat-bed or roller scanner and read into a computer....

    • Can you answer these questions?