#define sA 4
#define sB 5
#define sC 6
#define sD 7
#define sE 8
#define sF 9
#define sG 10
#define btnUp 3
#define btnDown 2
#define LED A0

int counter;

void setup() {
  // put your setup code here, to run once:
  pinMode(sA, OUTPUT);
  pinMode(sB, OUTPUT);
  pinMode(sC, OUTPUT);
  pinMode(sD, OUTPUT);
  pinMode(sE, OUTPUT);
  pinMode(sF, OUTPUT);
  pinMode(sG, OUTPUT);
  pinMode(LED, OUTPUT);
  pinMode(btnUp, INPUT);
  pinMode(btnDown, INPUT);

  digitalWrite(sA, HIGH);
  digitalWrite(sB, HIGH);
  digitalWrite(sC, HIGH);
  digitalWrite(sD, HIGH);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, HIGH);
  digitalWrite(sG, HIGH);

}

void loop() {
  // put your main code here, to run repeatedly

if (counter==0){
  digitalWrite(sA, LOW);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, LOW);
  digitalWrite(sE, LOW);
  digitalWrite(sF, LOW);
  digitalWrite(sG, HIGH);
}

if (counter==1){
  digitalWrite(sA, HIGH);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, HIGH);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, HIGH);
  digitalWrite(sG, HIGH);
}

if (counter==2){
  digitalWrite(sA, LOW);
  digitalWrite(sB, LOW);
  digitalWrite(sC, HIGH);
  digitalWrite(sD, LOW);
  digitalWrite(sE, LOW);
  digitalWrite(sF, HIGH);
  digitalWrite(sG, LOW);
}

if (counter==3){
  digitalWrite(sA, LOW);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, LOW);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, HIGH);
  digitalWrite(sG, LOW);
}

if (counter==4){
  digitalWrite(sA, HIGH);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, HIGH);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, LOW);
  digitalWrite(sG, LOW);
}

if (counter==5){
  digitalWrite(sA, LOW);
  digitalWrite(sB, HIGH);
  digitalWrite(sC, LOW);
  digitalWrite(sD, LOW);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, LOW);
  digitalWrite(sG, LOW);
}
if (counter==6){
  digitalWrite(sA, LOW);
  digitalWrite(sB, HIGH);
  digitalWrite(sC, LOW);
  digitalWrite(sD, LOW);
  digitalWrite(sE, LOW);
  digitalWrite(sF, LOW);
  digitalWrite(sG, LOW);
}

if (counter==7){
  digitalWrite(sA, LOW);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, HIGH);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, HIGH);
  digitalWrite(sG, HIGH);
}

if (counter==8){
  digitalWrite(sA, LOW);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, LOW);
  digitalWrite(sE, LOW);
  digitalWrite(sF, LOW);
  digitalWrite(sG, LOW);
}

if (counter==9){
  digitalWrite(sA, LOW);
  digitalWrite(sB, LOW);
  digitalWrite(sC, LOW);
  digitalWrite(sD, LOW);
  digitalWrite(sE, HIGH);
  digitalWrite(sF, LOW);
  digitalWrite(sG, LOW);
}

if (digitalRead(btnUp)==LOW && counter<10){
  counter++;
  delay(100);
}

if (digitalRead(btnDown)==LOW && counter>0){
  counter--;
  delay(100);
}

if (counter<=5){
  digitalWrite(LED, LOW);
}
if (counter>=6){
  digitalWrite(LED, HIGH);
}

}