Let me expand the subject, I want to create a program where I can display the files in the sdcard to LCD at once, meaning I need to press the down button first in order to view the next file in the LCD, so on and so forth. It's a selection something. So I have another button, if clicked it will read the selected file (current file viewed in the LCD). And also, the files extension that be viewed is .txt only. Does anyone of you know how to do it?, I try to code it but I failed. Sorry for my grammars, I hope anyone understand it and help me. Thank you. 