下面是动态数码管的电路图。

代码：动态数码管。

/**author:ChenLu*date:2014.11.20*///input the head file so that the program can work normally//iom16v---know the register//macros---know the BIT(x)#include
     
      #include
      
       //use those can make your study very conveninet#define uint unsigned int#define uchar unsigned char//display methods void initSystem();void delay();//display the variable datauchar flag;uchar table[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07};//the main functionvoid main(){ 	//init your system	initSystem();	while(1)	{	  	//start your function,and this is core solution		for(flag=0;flag<8;flag++)		{		    PORTC = ~(PORTC | BIT(0));			    PORTA = table[flag]; 		    PORTB = ~BIT(flag);		    PORTC = PORTC | BIT(0);		    delay();		}				}}//the method of init systemvoid initSystem(){ 	//control PA	DDRA = 0xFF;	PORTA = table[0];	//to make PB port output 	DDRB = 0xFF;	//to make PB port output high level	PORTB = 0xFE;		//control PC0	DDRC = DDRC | BIT(0);	PORTC = PORTC | BIT(0);}//the sub method of delayvoid delay(){ 	uint i,j; 	for(i=0;i<10;i++)	  for(j=0;j<5;j++);}
      
     

不断改变delay()函数中变量的值。会出现不一样功效。主要是熟悉AVR供应链管理IO使用口。

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