calculator.h

lcd1602显示

#ifndef __CALCULATOR_H__
#define __CALCULATOR_H__
extern void qingling();
extern void display(a0,a1,a2,a3,a4,a5,a6,a7,a8);
extern void error();
extern void turn(signed long c);
extern int select(uchar num);
extern signed long jisuan(signed long m,signed long n,uchar v);
extern void  detection();
#endif