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How does an OCR pen work? - ocr pen

Whether you drag the stylus on the paper surface with little light sensitive detectors in the end "see" areas where black and white on paper. Pursuing a wheel at the end where the pen is the role. The detectors are in a line perpendicular to the movement of the pen. The pin is connected to a computer, or has built one uses the computer information about the sensors in black and white, where the dot appears on the paper to create an image (eg a photo) in his memory, printed paper, that the pin was created by. By comparing this image with stored images of individual letters, the spring can print a proposal with the letters on the page. OCR means "OCR. Most OCR software takes guesswork and compares them with the spelling of common words, a better idea of what is actually on the page.