cpld.h

单片机计算器,可计算多位小数点的+-*/.可在lcd上显示

#include "reg52.h"
#include "absacc.h"
#include <stdio.h>
#include <math.h>
#define Busy	0x80 						// 忙判别位
#pragma SAVE
#pragma REGPARMS

extern unsigned char adc(unsigned char a);
extern void da(unsigned char addr,unsigned char dat);
extern void scan1 (void);
extern void scan (void);
extern unsigned char GetKey(void);
extern void Initial(void);
extern void Funtion(void);
extern void Delay400Ms(void);
extern void Delay5Ms(void);  
extern void LcdWriteData( char dataW );
extern void LcdWriteCommand(unsigned char CMD,unsigned char AttribC );
extern void LcdReset( void );
extern void DispOneChar(unsigned char x,unsigned char y,unsigned char Wdata);
extern void PutStr(unsigned char x,unsigned char y, unsigned char code *ptr); 
extern void ePutStr(unsigned char x,unsigned char y, unsigned char *ptr); 
extern void cls(void);   //显示清屏
//=======================================================================
extern unsigned char flagda;
extern unsigned char idata jishu1,jishu2;  //用于da转换,在scan函数中使用
//extern int xdata x[2000] ;
//extern int xdata y[2000] ;
extern unsigned char idata op;
extern float p1;
extern float p2;


extern float f1;
extern float f2;

//extern float *p=&p1;
extern unsigned char countup;
extern unsigned char idata ucKeyState;
sbit p10=P1^0;
sbit p11=P1^1;
sbit p12=P1^2;
sbit p13=P1^3;
sbit p14=P1^4;
sbit p15=P1^5;
sbit p16=P1^6;
sbit p17=P1^7;
sbit p32=P3^2;
#pragma RESTORE