em dag can giai thch doan code nay nhug khong hieu cac babc jup e mhe

[dnbcrwc417]

Hệ thống quảng cáo SangNhuong.com

#include <16f877a.h>
#include <def_877a.h>
#FUSES NOWDT,HS,NOPUT,NOPROTECT,NODEBUG,NOLVP,NOCPD,NOWRT
//------------------------------------------------------------------
int8 dem;
//================================================== =============
#int =timer2
void interrupt - timer2()
{
dem ++;
if (dem == 1) portD = 0*00
if (dem == 3 {PORTD =0*ff;dem = 0;}
}
//================================================== ===============
void main ()
{
PORTD = 0*ff
set - trist -D (0*00);
dem = 0
setup - timer-2 (T2 - DIV - BV,199,10);
enable - interrupts (int - timer2);
enable - interrupts (global);
while(TRUE);
}
em dag can dich doan code nay gap ma k biet gi ve pic nen khog biet dich moi nguoi gup em mhe