7-segment Manual.ino

int SEG_A = 4; //define which pins connect to which segments   
int SEG_B = 5;
int SEG_C = 8;
int SEG_D = 7;
int SEG_E = 6;
int SEG_F = 3;
int SEG_G = 2;
int SEG_DOT = 9;

int pause = 500;

void setup() {
  // put your setup code here, to run once:
  pinMode(SEG_A, OUTPUT);
  pinMode(SEG_B, OUTPUT);
  pinMode(SEG_C, OUTPUT);
  pinMode(SEG_D, OUTPUT);
  pinMode(SEG_E, OUTPUT);
  pinMode(SEG_F, OUTPUT);
  pinMode(SEG_G, OUTPUT);
  pinMode(SEG_DOT, OUTPUT);

  digitalWrite(SEG_A, HIGH);
  digitalWrite(SEG_B, HIGH);
  digitalWrite(SEG_C, HIGH);
  digitalWrite(SEG_D, HIGH);
  digitalWrite(SEG_E, HIGH);
  digitalWrite(SEG_F, HIGH);
  digitalWrite(SEG_G, HIGH);
  digitalWrite(SEG_DOT, HIGH);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(SEG_A, LOW);
  delay(pause);
  digitalWrite(SEG_A, HIGH);

  digitalWrite(SEG_B, LOW);
  delay(pause);
  digitalWrite(SEG_B, HIGH);

  digitalWrite(SEG_C, LOW);
  delay(pause);
  digitalWrite(SEG_C, HIGH);

  digitalWrite(SEG_D, LOW);
  delay(pause);
  digitalWrite(SEG_D, HIGH);

  digitalWrite(SEG_E, LOW);
  delay(pause);
  digitalWrite(SEG_E, HIGH);

  digitalWrite(SEG_F, LOW);
  delay(pause);
  digitalWrite(SEG_F, HIGH);

  digitalWrite(SEG_G, LOW);
  delay(pause);
  digitalWrite(SEG_G, HIGH);

  digitalWrite(SEG_DOT, LOW);
  delay(pause);
  digitalWrite(SEG_DOT, HIGH);
}