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  1. //http://cursoarduinomega.blogspot.com.ar/2015/04/display-de-7-segmentos-anodo-y-catodo.html
  2. const int a = 2;
  3. const int b = 3;
  4. const int c = 4;
  5. const int d = 5;
  6. const int e = 6;
  7. const int f = 7;
  8. const int g = 8;
  9.  
  10. int idelay = 500;
  11.  
  12. void setup() {
  13.   pinMode(a, OUTPUT);
  14.   pinMode(b, OUTPUT);
  15.   pinMode(c, OUTPUT);
  16.   pinMode(d, OUTPUT);
  17.   pinMode(e, OUTPUT);
  18.   pinMode(f, OUTPUT);
  19.   pinMode(g, OUTPUT);
  20. }
  21.  
  22. void loop() {
  23.   //0
  24.   digitalWrite(a, HIGH);
  25.   digitalWrite(b, HIGH);
  26.   digitalWrite(c, HIGH);
  27.   digitalWrite(d, HIGH);
  28.   digitalWrite(e, HIGH);
  29.   digitalWrite(f, HIGH);
  30.   digitalWrite(g, LOW);
  31.   delay(idelay);
  32.   //1
  33.   digitalWrite(a, LOW);
  34.   digitalWrite(b, HIGH);
  35.   digitalWrite(c, HIGH);
  36.   digitalWrite(d, LOW);
  37.   digitalWrite(e, LOW);
  38.   digitalWrite(f, LOW);
  39.   digitalWrite(g, LOW);
  40.   delay(idelay);
  41.   //2
  42.    digitalWrite(a, HIGH);
  43.   digitalWrite(b, HIGH);
  44.   digitalWrite(c, LOW);
  45.   digitalWrite(d, HIGH);
  46.   digitalWrite(e, HIGH);
  47.   digitalWrite(f, LOW);
  48.   digitalWrite(g, HIGH);
  49.   delay(idelay);
  50.   //3
  51.    digitalWrite(a, HIGH);
  52.   digitalWrite(b, HIGH);
  53.   digitalWrite(c, HIGH);
  54.   digitalWrite(d, HIGH);
  55.   digitalWrite(e, LOW);
  56.   digitalWrite(f, LOW);
  57.   digitalWrite(g, HIGH);
  58.   delay(idelay);
  59.   //4
  60.    digitalWrite(a, LOW);
  61.   digitalWrite(b, HIGH);
  62.   digitalWrite(c, HIGH);
  63.   digitalWrite(d, LOW);
  64.   digitalWrite(e, LOW);
  65.   digitalWrite(f, HIGH);
  66.   digitalWrite(g, HIGH);
  67.   delay(idelay);
  68.   //5
  69.    digitalWrite(a, HIGH);
  70.   digitalWrite(b, LOW);
  71.   digitalWrite(c, HIGH);
  72.   digitalWrite(d, HIGH);
  73.   digitalWrite(e, LOW);
  74.   digitalWrite(f, HIGH);
  75.   digitalWrite(g, HIGH);
  76.   delay(idelay);
  77.   //6
  78.    digitalWrite(a, HIGH);
  79.   digitalWrite(b, LOW);
  80.   digitalWrite(c, HIGH);
  81.   digitalWrite(d, HIGH);
  82.   digitalWrite(e, HIGH);
  83.   digitalWrite(f, HIGH);
  84.   digitalWrite(g, HIGH);
  85.   delay(idelay);
  86.   //7
  87.    digitalWrite(a, HIGH);
  88.   digitalWrite(b, HIGH);
  89.   digitalWrite(c, HIGH);
  90.   digitalWrite(d, LOW);
  91.   digitalWrite(e, LOW);
  92.   digitalWrite(f, LOW);
  93.   digitalWrite(g, LOW);
  94.   delay(idelay);
  95.   //8
  96.    digitalWrite(a, HIGH);
  97.   digitalWrite(b, HIGH);
  98.   digitalWrite(c, HIGH);
  99.   digitalWrite(d, HIGH);
  100.   digitalWrite(e, HIGH);
  101.   digitalWrite(f, HIGH);
  102.   digitalWrite(g, HIGH);
  103.   delay(idelay);
  104.   //9
  105.    digitalWrite(a, HIGH);
  106.   digitalWrite(b, HIGH);
  107.   digitalWrite(c, HIGH);
  108.   digitalWrite(d, HIGH);
  109.   digitalWrite(e, LOW);
  110.   digitalWrite(f, HIGH);
  111.   digitalWrite(g, HIGH);
  112.   delay(idelay);
  113. }
');