Assuming you mean OCR, you'll find it here: http://www.mathworks.com/help/vision/ref/ocr.html#bt548t1-2_1
Also, you could really benefit from reading this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer and this: http://www.mathworks.com/matlabcentral/answers/728-how-do-i-write-a-good-question-for-matlab-answers
