流水灯01.c

数码管实例

#include<AT89X51.h>
unsigned char i;
void delay(unsigned char t,k);
main()
{
while(1)
{
P0=0xff;
P0_0=0;
delay(10,100);
P0=0xff;
P0_1=0;
delay(10,100);
P0=0xff;
P0_2=0;
delay(10,100);
P0=0xff;
P0_3=0;
delay(10,100);
P0=0xff;
P0_4=0;
delay(10,100);
P0=0xff;
P0_5=0;
delay(10,100);
P0=0xff;
P0_6=0;
delay(10,100);
P0=0xff;
P0_7=0;
delay(10,100);




}
}

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