anh oi cho em hoi cai chuong trinh nay cai. sao luc em dich thi no khong co loi nhung khi nap wa chuong trinh mo phong thi LCD chi sang con chu thi khong hien len. anh xem giup em chuong trinh nay` nha :
#include <16F877.h>
#FUSES NOWDT, HS, PUT
#use delay(clock=20000000)
#use fast_io(d)
#include <lcd.c>
#define LCD_RS PIN_A0
#define LCD_RW PIN_A1
#define LCD_E PIN_A2

void main()
{
Lcd_Init();
output_high(LCD_RS);

output_high(LCD_E);

output_low(LCD_RW);

while(1)
{
lcd_putc('\f');
delay_ms(100);
lcd_putc("D");
delay_ms(200);
}
}