信号发生电路.c

献给初学单片机的爱好者们

#include<reg51.h>
sbit P1_1=P1^1;
#define  unchar  unsigned char  
unchar time=0;
unchar hight=50;
unchar T=250;
time1()  interrupt 1 using 1
{  TH0=(65536-10000)/256;
   TH1=(65536-10000)%256;
   if(++time==hight)	 	P1_1=0;
   if(time==T)
   {time=0;
   	P1_1=1;
   }
   
}
void main(void)
{ P1_1=1;
  TH0=(65536-10000)/256;
  TH1=(65536-10000)%256;
  TR0=1;
  TMOD=0X01;
  EA=1;
  ET0=1;
  PT0=1;
  while(1);
}