"How does OCR document scanning work?" http://www.explainthatstuff.com/how-ocr-works.html "How does OCR document scanning work?" "How does OCR document scanning work?" "How does OCR document scanning work?" http://www.explainthatstuff.com/how-ocr-works.html «ExplainThisStuff - Optical character recognition» «ExplainThisStuff - Optical character recognition» "How does OCR document scanning work?" "How does OCR document scanning work?" "How does OCR document scanning work?"