8bits_clock.rar_at89s52 clock

#include<reg52.h> #define uint unsigned int #define uchar unsigned char sbit p1=P3^0; sbit p2=P3^1; sbit p3=P3^2; sbit p4=P3^3; sbit p5=P3^4; sbit p6=P3^5; sbit p7=P3^6; sbit p8=P3^7; sbit key1=P1^0; sbit key2=P1^1; sbit key3=P1^2; sbit key4=P1^3; uchar code table[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xFF,0xBF};//共阳极数码管编码 uchar aa,ss,ff,hh,i,j,ii,jj,iii,jjj; void key();//按键控制函数 void sec();//秒显示函数 void fen();；//分显示函数 void hour();//时显示函数 void init();//初始化函数 void delay(uint z)//延时函数 { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void main() { init(); while(1)//大循环 { sec(); fen(); hour(); key(); } } void init() { aa=0; ss=0; ff=0; hh=0; TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; p3=table[11]; p6=table[11]; } void timer0() interrupt 1//定时器函数 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; aa++; if(aa==20) { aa=0; ss++; if(ss==60) { ss=0; ff++; if(ff==60) { ff=0; hh++; if(hh==24) hh=0; } } } i=ss/10; j=ss%10; ii=ff/10; jj=ff%10; iii=hh/10; jjj=hh%10; } void sec() { P0=table[11]; p3=0; delay(2); p3=1; P0=table[11]; p6=0; delay(2); p6=1; P0=table[i]; p7=0; delay(2); p7=1; P0=table[j]; p8=0; delay(2); p8=1; } void fen() { P0=table[ii]; p4=0; delay(2); p4=1; P0=table[jj]; p5=0; delay(2); p5=1; } void hour() { P0=table[iii]; p1=0; delay(2); p1=1; P0=table[jjj]; p2=0; delay(2); p2=1; } void key() { i=ss/10; j=ss%10; ii=ff/10; jj=ff%10; iii=hh/10; jjj=hh%10; if(key1==0) { delay(10); if(key1==0) { TR0=0; while(!key1); ss++; if(ss==60) ss=0; } } if(key2==0) { delay(10); if(key2==0) { TR0=0; while(!key2); ff++; if(ff==60) ff=0; } } if(key3==0) { delay(10); if(key3==0) { TR0=0; while(!key3); hh++; if(hh==24) hh=0; } } if(key4==0) { delay(10); if(key4==0) TR0=1; } }