#include<reg52.h>
#define unit unsigned int 为啥按下P10键两三次或者四五次之后数码管显示数字才加1啊？而且此处delay函数去掉和不去掉显示现象为什么会没有区别呢？？求大神指教
#define uchar unsigned char
sbit P21=P2^1;
sbit P10=P1^1;
uchar table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x02,0xf8,0x80,0x90};
void delay(unit x)
{
unit i,j;
for(i=0;i<x;i++)
for(j=0;j<110;j++);
}
void main()
{
int num=0;
P21=0;
while(1)
{
if(P10==0)
{
if(num<9)
{
delay(10);
if(P10==0)
{
P0=table[num];
num++;
}
}
}
while(!P10);
}
} |
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