求高手指点改计算器程序的流程图
#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit LCM_RW=P3^1; //定义引脚sbit LCM_RS=P3^0;sbit LCM_E=P3^5;#define LCM_Data P1#define Busy 0x80 //用于检测LCM状态字中的Busy标识 unsigned long xnn(unsigned char n);void WriteDataLCM(unsigned char WDLCM);void WriteCommandLCM(unsigned char WC...