单片机C语言（0到100计时器）

#define uint unsigned int#define uchar unsigned charuchar temp,bai,shi,ge,aa;sbit dula=P2^6;sbit wela=P2^7;uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};void display(uchar bai,uchar shi,uchar ge); void delay(uint z);void init();void main(){init(); //初始化子程序while(1){if(aa==20){aa=0;temp++;if(temp==100){temp=0;      }bai=temp/100;shi=temp%100/10;ge=temp%10;}display(bai,shi,ge);}}void delay(uint z) {uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);    } void display(uchar bai,uchar shi,uchar ge) {dula=1;P0=table[bai];dula=0;P0=0xff;//     wela=1;P0=0xfe; //位选通wela=0;delay(1) ;dula=1;P0=table[shi];dula=0;P0=0xff; //消隐wela=1;P0=0xfd;wela=0;delay(1) ;dula=1;P0=table[ge];dula=0;P0=0xff;// 消隐wela=1;P0=0xfb;wela=0;delay(1) ;} void init(){wela=0;dula=0;temp=0;TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;} void timer0() interrupt 1{ TH0=(65536-50000)/256;TL0=(65536-50000)%256;aa++;}