this is the project's code, but don't know why it doesn't work??? plz help #include <LiquidCrystal.h> //Header file for LCD from LiquidCrystal - Arduino Reference #include <Keypad.h> //Header file for Keypad from GitHub - Chris--A/Keypad: A version of the keypad library found in Wiring. This is ju…

help exists error 1

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