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An OMRFD, or Optical Mark Recognition Field Device, is a technology used to capture data from marked forms, such as surveys, tests, and ballots. It utilizes optical sensors to detect and interpret marks made by users, typically in the form of filled bubbles or checkboxes. This data is then converted into digital information for analysis and processing. OMRFDs are commonly used in educational assessments and elections due to their efficiency and accuracy in data collection.
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What are the types of optical readers?
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
What are the types of Optical Mark Reader?
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
