C语言编程实现STC89C52时钟控制与定时功能

//数码管显示年月日时分秒，新增按键按键调整，不带闹铃,闹铃的定时数据必须存储起来,否则上电就丢失了
#include<reg52.h>
#define uchar unsigned char 
#define uint unsigned int 
#define ulong unsigned long

uchar code num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40,0x58,0x38,0x63,0x5c,0x80};
//0x40是'-'(10) 0x58是'c'(11) 0x38是'l'(12) 0x63是'上o'(13) 0x5c是'下o'(14)  0x80是小数点(15)
//uchar code num1[]={0xbf,0x86,0xd8,0xcf,0xe6,0xed,0xfd,0x87,0xff,0xef};//带小数点的段码
uchar code wei[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
sbit ds_io=P1^1;
sbit ds_sck=P1^0;
sbit ds_cs=P1^2;
uchar nian,yue,ri,shi,fen,miao;
uchar set_yue,set_ri,set_shi,set_fen;//增加闹铃目标是 月日时分 四个    （上电会丢失的!!!!!!!）
uchar count;
uchar set_flag1,set_flag2;
//通过两个flag控制闹铃,我的闹铃查询在中断里,不设两个flag的话会一直响一分钟,因为不断进中断置set_flag
uchar dis_flag;

sbit beep=P1^4;
sbit k1=P3^2;
sbit k2=P3^3;
sbit k3=P3^4;
sbit k4=P3^5;
sbit k5=P1^6;
sbit k6=P1^7;
uchar key=0;
uchar key1=0;
//*******************************  bi()   ********************************

void bi(ulong i,uchar j) // j决定频率(20-80之间差不多),i决定持续时间
{
ulong c;
uint n;
for(c=0;c<i;c++)
{
for(n=0;n<j;n++);
beep=~beep;
}
}
//***************************   delayms  *********************************
void delayms(uint x)
{
uint y,z;
for(y=x;y>0;y--)for(z=110;z>0;z--);
}

//***************************  smg and display    *************************
void smgdis(uchar x,uchar y)
{
P2=0xff;
P0=num[y];
P2=wei[x];
delayms(3);
}

void DISPLAY()
{
if(dis_flag==0)
{