anh ơi giúp em lỗi này vơi, em tự học pic nên không ai chỉ hết
*** Error 18 "def_877a.h.c" Line 1(9,20): File can not be opened
Not in "E:\Program Files\PICC\devices\16F877A.h"
Not in "E:\Program Files\PICC\dr\16F877A.h"
Not in project "C:\Users\NhokPro1234\Documents\pi\project1\16F877 A.h"
*** Error 128 "def_877a.h.c" Line 3(1,12): A #DEVICE required before this line
2 Errors, 0 Warnings.