单片机实现流水灯循环
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单片机实现流水灯循环
#include
sbit duan=P2^2;
sbit wei=P2^3;
delay(unsigned int a)
{
unsigned int b;
for(;a>0;a--)
for(b=0;b<=500;b++);
}
unsigned int a[4]={0xfe,0xfd,0xfb,0xf7},n=0; main()
{
while(1)
{
P0=a[n];
wei=1;
wei=0;
P0=0x7d;
duan=1;
duan=0;
delay(500);
n++;
if(n>=4) n=0;
}
}