Code

#include <conio.h>
#include <stdio.h>
#include <stdlib.h>

int main()
{
int leds[9] = {0,1,2,4,8,16,32,64,128};
int i;
for(i=9;i>=0;i--)
{
_outp(0x378,leds[i]);
_sleep(1000);

}
return 0;
}

Description

The values to be outputted are stored in an array and we then loop through them one a ta time.

Download

walkingledsdown.txt