?#include“reg52.h“
#include“intrins.h“
#define?ad_con??P2
#define?addata??P0
#define?Disdata?P1
#define?uchar?unsigned?char
#define?uint??unsigned?int
//sbit?button_C=P2^7;
sbit???ALE=P2^3;
sbit???START=P2^4;
sbit???OE=P2^5;
sbit???EOC=P2^6;
sbit?AddA=P2^0;
sbit?AddB=P2^1;
sbit?AddC=P2^2;
bit?keynum;
bit?keyon;
unsigned?char?add_howl;
uchar?code?dis_7[11]={0x3f0x060x5b0x4f0x660x6d0x7d0x070x7f0x6f};
/*共陽7段LED斷碼表?“0”，“1”，“2”，“3”，“4”，“5”，“6”，“7”，“8”，“9”，“不亮”*/
uchar?code?scan_con[4]={0xfe0xfd0xfb0xf7};???????????????????????????//4位列掃描控制字
uchar?data?ad_data;????????//定義數(shù)據(jù)內(nèi)存單元
uint??data?dis[5]={0x000x000x000x000x00};?
uchar?ledcode[4];?
uint?nm;??????????????//定義4個顯示數(shù)據(jù)單元和1個數(shù)據(jù)占存單元
/********************1ms延時子函數(shù)*************/
/*delay1ms（uint?t）
{
?uin