#include <TM1637.h>

const int CLK=2;
const int DIO=3;

TM1637 tm(CLK, DIO);

void setup() {
  tm.init();
  tm.set(BRIGHT_TYPICAL);


}
unsigned int counter = 0;

void loop() {
  tm.display(3, (counter/1000)%10);
  tm.display(2, (counter/100)%10);
  tm.display(1,(counter/10)%10);
  tm.display(0,(counter%10));

  counter++;
  if (counter == 10000) (
    counter=0);

delay(100);
}