#include??
unsigned?char?code?dispcode[]={0x3f0x060x5b0x4f?
???????????????????????????????0x660x6d0x7d0x07?
???????????????????????????????0x7f0x6f0x770x7c?
???????????????????????????????0x390x5e0x790x710x40};//共陰數(shù)碼管編碼：0-f，最后是“-”
unsigned?char?dispbitcode[]={0x070x060x050x04?
?????????????????????????????0x030x020x010x00};?//位選端
unsigned?char?dispbuf[8]={0016001600};//初始狀態(tài)：00-00-00
unsigned?char?dispbitcnt=0;?
unsigned?char?second=0;?
unsigned?char?minute=0;?
unsigned?char?hour;?
unsigned?int?tcnt;?
unsigned?char?mstcnt=0;??
unsigned?char?ij;?
sbit?P0_0=P0^0;
sbit?P0_1=P0^1;
sbit?P0_2=P0^2;
sbit?P0_7=P0^7;
sbit?P3_0=P3^0;
sbit?P3_4=P3^4;
void?main（void）?
{
??TMOD=0x02;?
??TH0=0x06;?
??TL0=0x06;?
??TR0=1;?
??ET0=1;?
??EA=1;?
??hour=0;
??P3_0=0;
??P0_7=0;
???while（1）?
????{?
	?if（P0_0==0）?
????????{?
??????????for（i=10;i>0;i--）?
??????????for（j=248;j>0;j--）;?
??????????if（P0_0==0）?
????????????{?
??????????????second++;?
??????????????if（second==60）?
????????????????{?
??????????????????second=0;?
????????????????}?
??????????????dispbuf[0]=second%10;?
??????????????dispbuf[1]=second/10;?
??????????????while（P0_0==0）;?
????????????}?
????????}?
??????if（P0_1==0）?
????????{?
??????????for（i=10;i>0;i--）?
??????????for（j=248;j>0;j--）;?
??????????if（P0_1==0）?
????????????{?
??????????????minute++;?
??????????????if（minute==60）?
????????????????{?
??????????????????minute=0;?
????????????????}?
??????????????dispbuf[3]=minute%10;?
??????????????dispbuf[4]=minute/10;?
??????????????while（P0_1==0）;?
????????????}?
????????}?
??????if（P0_2==0）?
????????{?
??????????for（i=10;i>0;i--）?
??????????for（j=248;j>0;j--）;?
??????????if（P0_2==0）?
????????????{?
??????????????hour++;?
??????????????if（hour==24）?
????????????????{?
??????????????????hour=0;?
????????????????}?
??????????????dispbuf[6]=hour%10;?
??????????????dispbuf[7]=hour/10;?
??????????????while（P0_2==0）;?
????????????}?
????????}?
	??
????}?
}?
void?t0（void）?interrupt?1?using?0?
{?
?
??mstcnt++;?
??
??if（mstcnt==8）?
????{?
??????mstcnt=0;?
	??P3_0=1;
??????P2=dispcode[dispbuf[dispbitcnt]];?
	??P3_0=0;
??????P1=dispbitcode[dispbitcnt];?
??????dispbitcnt++;?
??????if（dispbitcnt==8）?
????????{?
??????????dispbitcnt=0;
		?
????????}?
????}?
	
??tcnt++;?
??if（tcnt==4000）?
????{?
??????tcnt=0;?
??????second++;
	??if（（second==54）&&（minute==59））
	?????P3_4=0;
	??if（second==59）
	?????P3_4=1;?
??????if（second==60）?
????????{?
??????????second=0;?
??????????minute++;?
	??if（minute==60）?
????????????{?
			??
??????????????minute=0;
			??hour++;?
??????????????if（hour==24）?
????????????????{?
??????????????????hour=0;?
????????????????}?
????????????}?
????????}?
??????dispbuf[0]=second%10;?
??????dispbuf[1]=second/10;?
??????dispbuf[3]=minute%10;?
??????dispbuf[4]=minute/10;?
??????dispbuf[6]=hour%10;?
??????dispbuf[7]=hour/10;?
????}?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4833??2009-07-08?09:19??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474

?????文件???????1634??2009-07-08?09:19??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474.hex

?????文件?????????40??2009-07-08?09:19??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474.lnp

?????文件???????7434??2009-07-08?09:19??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474.M51

?????文件???????1344??2009-10-06?17:06??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474.Opt

?????文件????????182??2009-10-06?17:06??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474.plg

?????文件???????2106??2009-07-08?09:20??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474.Uv2

????.......??????1343??2009-10-05?20:02??基于AT89s52數(shù)碼管顯示數(shù)字鐘\474_Opt.Bak

?????文件?????108683??2009-07-09?00:55??基于AT89s52數(shù)碼管顯示數(shù)字鐘\Last?Loaded?方案三---單片機數(shù)字鐘.DBK

?????文件???????3032??2009-07-08?09:20??基于AT89s52數(shù)碼管顯示數(shù)字鐘\Text1.c

?????文件???????6068??2009-07-08?09:19??基于AT89s52數(shù)碼管顯示數(shù)字鐘\Text1.LST

?????文件???????5715??2009-07-08?09:19??基于AT89s52數(shù)碼管顯示數(shù)字鐘\Text1.OBJ

?????文件?????108902??2009-10-06?17:06??基于AT89s52數(shù)碼管顯示數(shù)字鐘\方案三---單片機數(shù)字鐘.DSN

?????文件????????742??2009-10-06?17:06??基于AT89s52數(shù)碼管顯示數(shù)字鐘\方案三---單片機數(shù)字鐘.PWI

?????目錄??????????0??2009-10-06?17:06??基于AT89s52數(shù)碼管顯示數(shù)字鐘

-----------?---------??----------?-----??----

???????????????252058????????????????????15