calc.h

用51单片机开发的简单计算器程序

/**
 * File:
 *   calc.h - The main header file of this project.
 * Author:
 *   JudeChu from Dept. of Biomedical Eng., Tsinghua Univ.
 * Version:
 *   0.1.0
 */

#ifndef CALC_H
#define CALC_H

#include <reg51.h>
#include <intrins.h>
#define DATA_WIDTH 4
// The state value generated by flow_control.
#define STATE_NUM 0
#define STATE_DOT 1
#define STATE_REFRESH 2
#define STATE_ERROR 3
#define STATE_IDLE 4
#define STATE_SIGN 5

typedef unsigned char byte;

#endif