#include<stdio.h>

#include<conio.h>

#include<dos.h>

#include<stdlib.h>

#include<iostream.h>

void displaytime(void);

void main()

{

clrscr();

cout<<"

Chuong trinh hien thi gio he thong.";

cout<<"

\t(nhan mot phim bat ki de giam toc do cap nhat thoi gian 8 lan)";

cout<<"

\t(nhan them mot phim de ket thuc chuong trinh)

";

/*Tang toc len 8 lan*/

outportb(0x43,0x34); // tu dieu khien

outportb(0x40,0x00); // byte thap

outportb(0x40,0x20); // byte cao

displaytime();

/*Toc do binh thuong*/

outportb(0x43,0x34); // tu dieu khien

outportb(0x40,0x00); // byte thap

outportb(0x40,0x00); // byte cao

displaytime();

exit(1);

}

void displaytime(void)

{

struct dostime_t time;

while(1)

{

_dos_gettime (&time); /* doc thoi gian */

/* Hien thoi gian theo dinh dang gio:phut:giay:phan tram giay */

printf("\r%i:%i:%i,%i",time.hour,time.minute,time.second,time.hsecond);

if(kbhit())

{

getch();

return;

}

}

}