Page 187 - C Programming

#include<stdio.h>

#include<conio.h>

main()

{ char key; clrscr();

printf("******************\n");

printf("7 Segment4 digits\n");

printf("******************\n");

do{

textcolor(WHITE);

gotoxy(7,4); cprintf("5555");

outport(0x378,0x05);

textcolor(RED);

gotoxy(7,4); cprintf("5");

getch();outport(0x378,0x15);