Scanner
This is also called direct input device. Through this input device we can scan the picture and store the picture into computer. There are several kinds of scanners are available in market.
1. OCR (Optical Character Recorder): It is used to scan text only from and document or page.
2. OMR (Optical Mark Reader):This device is used to real only market character by black or any dark pen. This device is used to check answer sheets of different examination.
3. MICR (Magnetic ink Character Reader): This device is used to read any text written by magnetic ink. In bank this used to read Draft number.
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