解决方法：
试验数码管上显示数字( 单片机直接实现位选 共阴极) 。
解决方式：
连接方法：P0与J12 用8PIN排线连接 P1与JP16 用排线连接 。
代码：

#include #define uint unsigned int #define uchar unsigned char void delay(uint z) { uint x,y; for(x=z;x>0;x–) { for(y=0;y<113;y++) { } } } unsigned int code dbit[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F}; unsigned int code num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40}; void main() { while(1) { P1=dbit[4]; P0=num[9]; } } 位定义 #include #include #define uint unsigned int #define uchar unsigned char sbit LSA=P2^2; sbit LSB=P2^3; sbit LSC=P2^4; uchar code num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; void delay(uint z) { uint x,y; for(x=z;x>0;x–) { for(y=0;y<113;y++) { } } } void main() { while(1) { LSA=0; LSB=0; LSC=0; P0=num[6]; delay(2); LSA=1; LSB=0; LSC=0; P0=num[6]; delay(2); } } //让八个数码管全部亮并且从0~9循环 #include #include #define uint unsigned int #define uchar unsigned char uchar num; uchar wnum=0x00; uchar code dbit[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//段选，选择要显示的数字 //uchar code wnum[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F};//八位数码管 void delay(uint z) { uint x,y; for(x=z;x>0;x–) { for(y=0;y<113;y++) { } } } void main() { P1=wnum; while(1) { for(num=0;num<10;num++) { P0=dbit[num]; delay(500); } } }