找单片机大神帮忙，不会啊自己写不出来头疼

正文摘要:

#include "reg52.h        " #define uint unsigned int #define uchar unsigned char sbit LSA=P2^2; sbit LSB=P2^3; sbit LSC=P2^4; sbit k1=P3^0; sbit k3=P3^3; ...