c51闹钟程序

借这网速好把以前做的也整理上来
左图正面凹陷下去的是三个菜单按钮，右图边上的usb接口是供程序下载的，内部为四节镍镉电池供电电压4.8v


  #include<reg52.h>
 #include<intrins.h>
 #define uchar unsigned char
 #define uint unsigned int
 uchar hou=0,min=0,sec=0,houc=0,minc=0,secc=0;
 uint m=0;
 bit yy=0;
 sbit khou=P1^1;
 sbit kmin=P1^0;
 sbit timesea=P1^2;
 sbit clock=P3^7;
 sbit clear=P3^6;
&n