//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
#include?

#define?START?P3_4			???//ATART，ALE接口。0->1->0:啟動AD轉(zhuǎn)換。
#define?EOC?P3_3			???//轉(zhuǎn)換完畢由0變1.
#define?OUTPORT?P2?

												//AD轉(zhuǎn)換函數(shù)，返回轉(zhuǎn)換結(jié)果。
												//轉(zhuǎn)換結(jié)果是3位數(shù)，小數(shù)點在百位與十位之間。
unsigned?int?uiADTransform（）
{
	unsigned?int?uiResult;

	START=1;			?//啟動AD轉(zhuǎn)換。
	START=0;

	while（EOC==0）;		?//等待轉(zhuǎn)換結(jié)束。

	uiResult=OUTPORT;	?//出入轉(zhuǎn)換結(jié)果。

	uiResult=（100*uiResult）/51;		???//處理運算結(jié)果。

	return?uiResult;
}

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

?????文件??????99433??2009-12-22?09:51??電壓表\DigitalVoltmeter.DSN

?????文件????????742??2009-12-22?14:39??電壓表\DigitalVoltmeter.PWI

?????文件???????2304??2007-08-08?16:00??電壓表\Keil\DATransform.lst

?????文件???????2678??2007-08-08?16:00??電壓表\Keil\DATransform.obj

?????文件??????18360??2007-08-08?16:02??電壓表\Keil\DigitalVoltmeter

?????文件???????3906??2007-08-08?16:02??電壓表\Keil\DigitalVoltmeter.hex

?????文件?????????73??2007-08-08?16:02??電壓表\Keil\DigitalVoltmeter.lnp

?????文件??????13930??2007-08-08?16:02??電壓表\Keil\DigitalVoltmeter.M51

?????文件???????1390??2009-12-16?15:36??電壓表\Keil\DigitalVoltmeter.Opt

?????文件????????166??2009-12-16?15:36??電壓表\Keil\DigitalVoltmeter.plg

?????文件???????2272??2009-12-16?15:36??電壓表\Keil\DigitalVoltmeter.Uv2

????.......??????1395??2009-12-12?21:39??電壓表\Keil\DigitalVoltmeter_Opt.Bak

????.......??????2252??2007-08-08?16:04??電壓表\Keil\DigitalVoltmeter_Uv2.Bak

?????文件?????????95??2007-08-08?11:23??電壓表\Keil\include\DATransform.h

?????文件????????128??2007-08-08?15:08??電壓表\Keil\include\includes.h

?????文件???????1987??2007-08-08?09:49??電壓表\Keil\include\SMC1602.h

?????文件???????8848??2007-08-08?16:02??電壓表\Keil\main.lst

?????文件???????6669??2007-08-08?16:02??電壓表\Keil\main.obj

?????文件??????10675??2007-08-08?16:00??電壓表\Keil\SMC1602.lst

?????文件??????11397??2007-08-08?16:00??電壓表\Keil\SMC1602.obj

?????文件????????804??2007-08-08?15:07??電壓表\Keil\sources\DATransform.c

?????文件???????3752??2007-08-08?16:06??電壓表\Keil\sources\main.c

?????文件???????5425??2007-08-08?15:46??電壓表\Keil\sources\SMC1602.c

?????文件??????99177??2007-11-09?10:36??電壓表\Last?Loaded?DigitalVoltmeter.DBK

?????文件????????184??2009-04-20?17:16??電壓表\proteus仿真論壇.txt

?????文件????????205??2009-04-20?17:14??電壓表\proteus仿真論壇.url

?????文件?????476672??2009-12-18?11:15??電壓表\基于AT89S51的電壓表設(shè)計.doc

?????文件????????184??2009-04-20?17:17??電壓表\重要說明.txt

?????目錄??????????0??2009-12-15?22:49??電壓表\Keil\include

?????目錄??????????0??2009-12-15?22:49??電壓表\Keil\sources

............此處省略5個文件信息