How do OCR devices read text?

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Tags

1. #looks
2. #letter
3. #particular
4. #image
5. #represent
6. #words
7. #optical
8. #number
9. #recognition
10. #recognize
11. #character
12. #white
13. #scanned
14. #computer
15. #converting
16. #determine
17. #method
18. #attempts
19. #black