Question

求让单片机AT89C52的数码管从10显示到0的程序

Answer 1

#include<regx51.h>

#define uchar unsigned char
#define uint unsigned int
sbit sw = P2^0;
sbit gw = P2^1;
uchar code tab[11]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void delay(void)
{
uchar i,j,k;
for(i=10;i>0;i--)
for(j=210;j>0;j--)
for(k=210;k>0;k--);
}
void main()
{
uint value = 10,a,b;
while(1)
{
a = value / 10;
b = value % 10;
value --;
sw = 1;
P1 = tab[a];
sw = 0;
delay();
sw = 1;
P1 = tab[b];
sw = 0;
delay();
if(value < 0 )
value = 10;
}
}
QQ上已经解决了，呵呵