能否把这个程序详细讲解一下 求帮助

正文摘要:

#include<reg51.h> sbit rs=P2^2; sbit rw=P2^3; sbit en=P2^4; sbit dula=P2^5; sbit wela=P2^7; #define uint unsigned int #define uchar unsigned char uint n,aa,bb,aa1,aa2,aa3,bb1,bb2,bb3; voi ...