电路原理图
元件清单
程序(C语言)
#include
unsigned char smg[]={0x5b,0x3f,0x5b,0x3f};//2020字形码(共阳极)
void delay(unsigned int time);
void main()
{
unsigned char i,W;
while(1)
{
W=0x01;
for(i=0;i<4;i++)
{
P1=W;
W<<=1;
P0=smg[i];
delay(10);
}
}
}
void delay(unsigned int time)
{
unsigned int j=0;
for(;time> 0;time--)
for(j=0;j<125;j++);
}