int t = 500
void setup(){
pinMode(1,OUTPUT); //A
pinMode(2,OUTPUT); //B
pinMode(3,OUTPUT); //C
pinMode(4,OUTPUT); //D
pinMode(5,OUTPUT); //E
pinMode(6,OUTPUT); //F
pinMode(7,OUTPUT); //G
digitalWrite(1,HIGH);
digitalWrite(2,HIGH);
digitalWrite(3,HIGH);
digitalWrite(4,HIGH);
digitalWrite(5,HIGH);
digitalWrite(6,HIGH); /// ZERO OR O
delay(1000);
digitalWrite(1,LOW);
digitalWrite(2.LOW);
digitalWrite(3,LOW);
digitalWrite(4,LOW);