Which of the following is an input device which can detect the presence or absence of
Which of the following is an input device which can detect the presence or absence of
a pencil or pen mark on a paper?
Show answerHide answer
Correct answer: (A) Optical Mark Reader (OMR)
Explanation
An Optical Mark Reader senses the presence or absence of pen/pencil marks at fixed positions, as in OMR answer sheets. OCR reads printed characters instead.