STC89C52时钟程序.doc

#include #define uint unsigned int #define uchar unsigned charuchar q,w,e,r,t,y,h ,num,temp; uchar code led=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90 ;/0-9数码管段 共阳极uchar code led2=0x7e,0xbd,0xdb,0xe7,0xaa,0x55,0xcc,0x33,0xf0,0x0f ; /LED灯 uchar keyscan(); void init(); void delay( uchar i); void puanduan(uint aa); void delayms(uint z); void qingling(); void weixuanze();/*主函数*void main() init();/初始化函数while(1) weixuanze();/*初始化函数*void init()TMOD=0x01;TH0=(65536-45872)/256;TL0=(65536-45872)%256;EA=1;ET0=1;TR0=1;/*中断函数*void To_INT(void) interrupt 1TH0=(65536-45872)/256;TL0=(65536-45872)%256;q+; if(q=20) /每20次是一秒 q=0; w+;/秒数 if(w=60) /每60次是一分 w=0;/进位秒数重新为零 e+;/分数 if(e=60) /每60分是一个小时 e=0; r+; if(r=10) / r=0; t+; if(t=10) t=0; y+; if(y=24) y=0; q=0;e=0;r=0;t=0; /*按键选择功能函数* void puanduan(int aa) if(aa=1) TR0=1;if(aa=2)TR0=0;if(aa=3) qingling();elseP1=0xff;/*检测按键函数*uchar keyscan() P3=0xef; temp=P3;temp=temp&0x0f;while(temp!=0x0f)delay(2);temp=P3;temp=temp&0x0f;while(temp!=0x0f)temp=P3;switch(temp)case 0xee:num=1;break;case 0xed:num=2;break;case 0xeb:num=3;break;case 0xe7:num=4;break;while(temp!=0x0f)temp=P3;temp=temp&0x0f; return num; /*清零*void qingling() TR0=1;w=e=0;P2=0xfe;P0=ledw%10;/ge wdelay(1);P2=0xfd; P0=ledw%100/10;/shi wdelay(1);P2=0xf7;P0=lede%60;/bai edelay(1);P2=0xfb;P0=0xbf;delay(1);P2=0xef;P0=lede/10;/qian edelay(1);P2=0xdf;P0=0xbf;delay(1); P2=0xbf;P0=lede/10/10;/wan edelay(1); P2=0x7f;P0=lede/10/10/10;/ 十万 edelay(1);/*各位选择函数*void weixuanze() P2=0xfe; P0=ledw%10;/ge wP1=led2w%10;delay(1);P2=0xfd; P0=ledw%100/10;/shi wdelay(1);P2=0xf7;P0=lede%60;/bai edelay(1);P2=0xfb;P0=0xbf;delay(1);P2=0xef;P0=lede/10;/qian edelay(1);P2=0xdf;P0=0xbf;delay(1); P2=0xbf;P0=lede/10/10;/wan edelay(1); P2=0x7f;P0=lede/10/10/10;/ 十万 edelay(1);puanduan(keyscan(); /*延时* void delayms(uint z)uint x,y;for(x=z;x0;