流水灯02.c

数码管实例

#include<AT89X51.h>
unsigned char i;
void delay(unsigned char t,k);
main()
{
while(1)
{
for(i=0;i<256;i++)
{
P0=256-i;
delay(10,80);
}
}
}

void delay(unsigned char t,k)//延时子程序
{
while(--k)
{
while(--t);
}
}