单片机实现的遥控小汽车的设计研究论文与程序

				////////////////////////////////////////////////////////////////////////
				//文件名：disp.h
				//功能描述:显示模块头文件
				////////////////////////////////////////////////////////////////////////
				#include "reg52.h"
				
				#define uchar unsigned char
				#define uint unsigned int
				
				////////////////////////////////////////////////////////////////////////
				#define TIME_OVERLOAD 3960
				
				#define CHAR_A 10
				#define CHAR_b 11
				#define CHAR_C 12
				#define CHAR_d 13
				#define CHAR_E 14
				#define CHAR_F 15
				#define CHAR_H 16
				#define CHAR_J 17
				#define CHAR_L 18
				#define CHAR_n 19
				#define CHAR_P 20
				#define CHAR_q 21
				#define CHAR_r 22
				#define CHAR_U 23
				#define CHAR_y 24
				#define CHAR_MIE 25
				
				#define LED_DP 0x80
				#define LED_SHANSHUO 0x40
				
				//记录时间的结构
				typedef struct
				{
				        uchar t_ms;
				        uchar t_100ms;
				        uchar t_sec;
				        uchar t_min;
				}TIME;
				
				//数码管显示模式宏定义
				//显示时间
				#define MODE_TIME 0x00
				//显示里程
				#define MODE_LICHENG 0x01
				//显示用户指定的内容
				#define MODE_USER 0x02
				
				
				
				
				
				
				extern data uchar led[4];
				extern data TIME time;
				
				extern bit LED_DC;
				extern bit LED_HZ;
				extern bit LED_ZZ;
				extern bit LED_SHOUDONG;
				extern bit LED_ZIDONG;
				extern bit LED_ZOUSHUZI;
				extern bit LED_RECORD;
				extern bit LED_FEN;
				extern bit LED_YZ;
				extern bit LED_QZ;
				
				extern bit SSLED_SHOUDONG;
				extern bit SSLED_ZIDONG;
				extern bit SSLED_ZOUSHUZI;
				extern bit SSLED_RECORD;
				extern bit SSLED_FEN;
				
				//函数原型声明
				extern void init_timer0(void);
				extern void resettime(void);
				extern unsigned long gettime(void);
				extern void delay_ms(uint n);
				extern void beep(uchar n);
				extern void setdispmode(uchar mode);
				extern uchar getdispmode(void);