User manual

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pickNumber((n/x/10)%10);

delayMicroseconds(del);

clearLEDs();

pickDigit(4);

pickNumber(n/x%10);

delayMicroseconds(del);

n++;

if (digitalRead(13) == LOW)

{

n = 0;

}

void pickDigit(int x) //defing pickDigit(x), its role is turn on the dx port

{

digitalWrite(d1, HIGH);

digitalWrite(d2, HIGH);

digitalWrite(d3, HIGH);

digitalWrite(d4, HIGH);

switch(x)

{

case 1:

digitalWrite(d1, LOW);

break;

case 2:

digitalWrite(d2, LOW);

break;

case 3:

digitalWrite(d3, LOW);

break;

default:

digitalWrite(d4, LOW);

break;

}

void pickNumber(int x) //define pickNumber(x), Its role is to show digital x

{

switch(x)

{