Optical Mark Recognition (OMR)
Optical Mark Recognition is the process of recognizing a pre-specified type of marks made by pencils or pen on the paper. This type of technology is used to evaluate the papers of competitive examination. Optical mark reading is done by special device called optical mark reader.
Magnetic-Ink Character Recognition (MICR)
Magnetic-Ink Character Recognition technology is used by the banking industry for faster processing of the large volume of cheques. This technology also ensures accuracy of data entry, because most of the information is pre-printed on the cheque and is directly fed to the computer. Magnetic ink character reader is a device used in the technology.
Bar Code Reader (BCR)
A bar code is a machine-readable code in the form of a pattern of
parallel vertical lines. They are commonly used for labeling goods that are available in supermarkets, numbering books in libraries, etc. These codes/strips are sensed and read by a photoelectric device called bar code reader that reads the code by means of reflective light. The information recorded in a bar code reader is fed into the computer, which recognizes the information from the thickness and spacing of bars.
Optical Mark Recognition is the process of recognizing a pre-specified type of marks made by pencils or pen on the paper. This type of technology is used to evaluate the papers of competitive examination. Optical mark reading is done by special device called optical mark reader.
Magnetic-Ink Character Recognition (MICR)
Magnetic-Ink Character Recognition technology is used by the banking industry for faster processing of the large volume of cheques. This technology also ensures accuracy of data entry, because most of the information is pre-printed on the cheque and is directly fed to the computer. Magnetic ink character reader is a device used in the technology.
Bar Code Reader (BCR)
A bar code is a machine-readable code in the form of a pattern of
parallel vertical lines. They are commonly used for labeling goods that are available in supermarkets, numbering books in libraries, etc. These codes/strips are sensed and read by a photoelectric device called bar code reader that reads the code by means of reflective light. The information recorded in a bar code reader is fed into the computer, which recognizes the information from the thickness and spacing of bars. 
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