How does a 16x2 LCD screen work?

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Tags

1. #liquid
2. #devices
3. #rather
4. #emitting
5. #display
6. #requires
7. #works
8. #emits
9. #crystal
10. #principle
11. #blocking
12. #which
13. #light
14. #screen
15. #cathode
16. #replacing
17. #backlight
18. #displays
19. #always