数码管的基本原理这里不做赘述，直接快进到电路和代码部分
1.电路
2.代码部分
int leda = 5;
int ledb = 4;
int ledc = 8;
int ledd = 9;
int lede = 10;
int ledg = 7;
int ledf = 6;
int delayWait = 1000;
int ledB=0;
int ledA=1;
int ledF=2;
int ledG=3;
int ledC=11;
int ledD=12;
int ledE=13;
int i=0;
int n=0;
// **the setup routine runs once when you press reset**:
void setup() {
// **initialize the digital pin as an output.引脚初始化
pinMode(leda, OUTPUT);
pinMode(ledb, OUTPUT);
pinMode(ledc, OUTPUT);
pinMode(ledd, OUTPUT);
pinMode(lede, OUTPUT);
pinMode(ledg, OUTPUT);
pinMode(ledf, OUTPUT);
pinMode(ledA, OUTPUT);
pinMode(ledB, OUTPUT);
pinMode(ledC, OUTPUT);
pinMode(ledD, OUTPUT);
pinMode(ledE, OUTPUT);
pinMode(ledG, OUTPUT);
pinMode(ledF, OUTPUT);
}
void loop ()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledd, HIGH);
digitalWrite(lede, HIGH);
digitalWrite(ledf, HIGH);
digitalWrite(ledA, HIGH);
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledD, HIGH);
digitalWrite(ledE, HIGH);
digitalWrite(ledF, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledd, LOW);
digitalWrite(lede, LOW);
digitalWrite(ledf, LOW);
for(i=0;i<=59;i++){ /* for循环里的内容完成01到59的数码管显示 */
one();
two();
three();
four();
five();
six();
seven();
eight();
nine();
zero();
n=n+1;
switch(n)
{
case 1:/*在十位显示数字原理是，命令需要的引脚处于高电平，然后继续执行个位的10秒循环，
当到达下一个十位时，新的case使原有的引脚变成低电平，再让新的引脚变成高电平，
不需要delay即可完成数字的基本循环The principle of displaying numbers in ten bits is that the command requires the pin to be at a high level and then continue to perform a 10-second cycle of bits.
When the next ten bits are reached, the new case makes the original pin low, and the new pin becomes high.
No delay is required to complete the basic loop of numbers*/
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
break;
case 2:
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledA, HIGH);
digitalWrite(ledB, HIGH);
digitalWrite(ledD, HIGH);
digitalWrite(ledE, HIGH);
digitalWrite(ledG, HIGH);
break;
case 3:
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledA, HIGH);
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledD, HIGH);
digitalWrite(ledG, HIGH);
break;
case 4:
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledF, HIGH);
digitalWrite(ledG, HIGH);
break;
case 5:
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledA, HIGH);
digitalWrite(ledF, HIGH);
digitalWrite(ledG, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledD, HIGH);
break;
case 6:
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
n=0;
break;
}
}
}
void one()
{
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
delay(delayWait);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
}
void two()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledd, HIGH);
digitalWrite(lede, HIGH);
digitalWrite(ledg, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledd, LOW);
digitalWrite(lede, LOW);
digitalWrite(ledg, LOW);
}
void three()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledd, HIGH);
digitalWrite(ledg, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledd, LOW);
digitalWrite(ledg, LOW);
}
void four()
{
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledf, HIGH);
digitalWrite(ledg, HIGH);
delay(delayWait);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledf, LOW);
digitalWrite(ledg, LOW);
}
void five()
{
digitalWrite(leda, HIGH);
digitalWrite(ledf, HIGH);
digitalWrite(ledg, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledd, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledf, LOW);
digitalWrite(ledg, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledd, LOW);
}
void six()
{
digitalWrite(leda, HIGH);
digitalWrite(ledf, HIGH);
digitalWrite(ledg, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledd, HIGH);
digitalWrite(lede, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledf, LOW);
digitalWrite(ledg, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledd, LOW);
digitalWrite(lede, LOW);
}
void seven()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
}
void eight()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledd, HIGH);
digitalWrite(lede, HIGH);
digitalWrite(ledf, HIGH);
digitalWrite(ledg, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledd, LOW);
digitalWrite(lede, LOW);
digitalWrite(ledf, LOW);
digitalWrite(ledg, LOW);
}
void nine()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledf, HIGH);
digitalWrite(ledg, HIGH);
digitalWrite(ledd, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledf, LOW);
digitalWrite(ledg, LOW);
digitalWrite(ledd, LOW);
}
void zero()
{
digitalWrite(leda, HIGH);
digitalWrite(ledb, HIGH);
digitalWrite(ledc, HIGH);
digitalWrite(ledd, HIGH);
digitalWrite(lede, HIGH);
digitalWrite(ledf, HIGH);
delay(delayWait);
digitalWrite(leda, LOW);
digitalWrite(ledb, LOW);
digitalWrite(ledc, LOW);
digitalWrite(ledd, LOW);
digitalWrite(lede, LOW);
digitalWrite(ledf, LOW);
}
void ten()
{
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
delay(delayWait);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
}
/*void twenty()
{
digitalWrite(ledA, HIGH);
digitalWrite(ledB, HIGH);
digitalWrite(ledD, HIGH);
digitalWrite(ledE, HIGH);
digitalWrite(ledG, HIGH);
delay(delayWait);
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledE, LOW);
digitalWrite(ledG, LOW);
}
void thirty()
{
digitalWrite(ledA, HIGH);
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledD, HIGH);
digitalWrite(ledG, HIGH);
delay(delayWait);
digitalWrite(ledA, LOW);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
digitalWrite(ledG, LOW);
}
void forty()
{
digitalWrite(ledB, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledF, HIGH);
digitalWrite(ledG, HIGH);
delay(delayWait);
digitalWrite(ledB, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
}
void fifty()
{
digitalWrite(ledA, HIGH);
digitalWrite(ledF, HIGH);
digitalWrite(ledG, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledD, HIGH);
delay(delayWait);
digitalWrite(ledA, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
}*/void fifty()
{
digitalWrite(ledA, HIGH);
digitalWrite(ledF, HIGH);
digitalWrite(ledG, HIGH);
digitalWrite(ledC, HIGH);
digitalWrite(ledD, HIGH);
delay(delayWait);
digitalWrite(ledA, LOW);
digitalWrite(ledF, LOW);
digitalWrite(ledG, LOW);
digitalWrite(ledC, LOW);
digitalWrite(ledD, LOW);
}
