跪求一个at89c51单片机的c语言程序

#include #define uchar unsigned char #define uint unsigned int sbit db=P2^7; char i,sec,min,h,date,month,year,flag; uchar j,k,m,n,o,p; sbit dula=P2^0; sbit wela1=P2^1; sbit wela2=P2^2; sbit key_ch=P3^5; sbit key_add=P3^6; sbit key_minus=P3^7;