电子万年历毕业设计(基于AT89C51单片机和DS1302时钟芯片)

.

}

else if(mod==7) {

baojingfen=(((baojingfen>>4)&0x01)*10+(baojingfen&0x0f))-1;

if(baojingfen==-1) { }

baojingfen=59;

ds1302_write(0x88,((baojingfen/10)<<4)+((b

aojingfen)&0x0f)); }

..

}

}

}

.

}

//Key.c//

//Bell.c//

#include

#define uint unsigned int sbit beep=P3^7;

extern void delay(uint);

void didi(uint cnt) {

..

uint t;

for(t=cnt;t>0;t--)

{ beep=0; delay(100); beep=1; delay(200);

}

}

//Bell.c// //Ds1302.h//

void ds1302_write(char comm,char dat1); char ds1302_read(char comm);

//Ds1302.h// //Key.h// void key(); //key.h// //Bell.h// void didi(uint cnt);

//Bell.h//

..

.

.

..