________read hand-drawn marks, such as small circles or rectangles. (335)
a. MICR readers b. Digitizers c. OMR devices d. OCR devices
The Correct Answer and Explanation is :
The correct answer is c. OMR devices.
Explanation:
OMR (Optical Mark Recognition) devices are designed to read hand-drawn marks, such as small circles or rectangles, that are typically filled in by users on paper forms. This technology is commonly used in applications like scanning multiple-choice test sheets, surveys, or forms where users are asked to mark answers or choices with pencil or ink.
OMR devices function by detecting the presence or absence of marks in pre-defined areas. These marks are typically made in the form of small filled circles, squares, or rectangles, which are scanned by the OMR system. The system uses light sensors to determine the amount of light reflected from the marked and unmarked areas. If the mark is present (e.g., a filled circle or rectangle), the sensor detects less light reflection from that area, which is interpreted as a “mark.”
OMR technology is highly efficient for forms and tests where responses are standardized and can be interpreted quickly and accurately by the system. Common examples of OMR applications include:
- Multiple-choice tests: Students fill in bubbles or circles to indicate their answers.
- Surveys and questionnaires: Respondents fill in predefined marks to select their answers.
- Ballot papers: In elections, voters mark a box to select candidates or options.
Unlike other types of optical recognition devices, such as OCR (Optical Character Recognition), which reads printed or written text, or MICR (Magnetic Ink Character Recognition), which is used for reading characters printed with magnetic ink (e.g., on checks), OMR is specifically focused on detecting shapes and marks made by users.
In short, OMR devices excel at processing forms where users mark checkboxes, circles, or rectangles, making them suitable for applications in education, market research, and voting systems.