你好帮看下谢谢
#include<reg51.h>
#define uint unsigned int
#define uchar unsigned char
uint v=0,time=0;
sbit key=P1^0;
void t0isr() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
time++;
if((key==0)&&(time>40)); //如果按键时间超过2秒且键未释放,变量+1
if(key==1)time=0; //如果键释放,时间复位
}
main()
{
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TR0=1;
ET0=1;
EA=1;
while(1);
}
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