基于51单片机的定时器程序

#includereg52.h//包含头文件#defineucharunsignedchar#defineuintunsignedint//定义unsignedcharcodetable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};//数字编码sbitP07=P0^7;//位定义，使输出有效?uchartemp,num,shi,ge;voiddelay(uintz){uintx,y;for(x=z;x0;x--)for(y=110;y0;y--);}//延时voidinit()//程序初始化{P07=0;//使输出有效TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;//总中断开TR0=1;//定时方式ET0=1;//定时器开}voidmain(){init();while(1);}voidtimer0()interrupt1{uchartemp;TH0=(65536-50000)/256;TL0=(65536-50000)%256;temp++;if(temp==20)//每秒进一次中断{temp=0;//清0num++;//数P2=table[ge];if(num==9){num=0;}ge=num%10;delay(100);}}