📄 多路复用方法带来引脚数量更少的led显示器 -- edn电子设计技术.htm
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<!-- saved from url=(0053)http://article.ednchina.com/Analog/20090304103340.htm -->
<HTML xmlns="http://www.w3.org/1999/xhtml"><HEAD><TITLE>多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术</TITLE>
<META http-equiv=Content-Type content="text/html; charset=utf-8"><LINK
href="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/master.css" type=text/css
rel=stylesheet><LINK href="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/common.css"
type=text/css rel=stylesheet>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/edn.js"
type=text/javascript></SCRIPT>
<SCRIPT language=javascript
src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/jquery-1.2.6.pack.js"
type=text/javascript></SCRIPT>
<LINK href="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/secondlevel.css"
type=text/css rel=stylesheet><LINK
href="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/Ad.css" type=text/css
rel=stylesheet><LINK media=screen
href="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/fancy.css" type=text/css
rel=stylesheet>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/jquery.fancybox.js"
type=text/javascript></SCRIPT>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/videobehavior.js"
type=text/javascript></SCRIPT>
<META id=ctl00_Style_DescriptionControl
content=Charlieplexing作为一种LED显示器多路复用方法,最近吸引了很多注意,这是因为它使人们能用N条I/O线路来控制N×(N-1)只LED(参考文献1至参考文献5)。而标准的多路复用方法控制的LED则少得多。表1列出了用Charlieplexing方法和标准多路复用方法所能控制的LED数量,它把N条I/O线路的可用数量划分成数量适当的行与列。表1还列出了当LED处于接通状态时,流过LED的电流的占空比。
name=description></META>
<META id=ctl00_Style_KeywordsControl content=LED,显示器 name=keywords></META>
<STYLE type=text/css>.pagination {
FONT-SIZE: 80%; LINE-HEIGHT: 15px; FONT-FAMILY: Arial,Helvetica,sans-serif
}
.pagination A {
BORDER-RIGHT: #aae 1px solid; BORDER-TOP: #aae 1px solid; BORDER-LEFT: #aae 1px solid; COLOR: #15b; BORDER-BOTTOM: #aae 1px solid; TEXT-DECORATION: none
}
.pagination A {
PADDING-RIGHT: 0.5em; DISPLAY: block; PADDING-LEFT: 0.5em; FLOAT: left; MARGIN-BOTTOM: 5px; PADDING-BOTTOM: 0.3em; MARGIN-RIGHT: 5px; PADDING-TOP: 0.3em
}
.pagination SPAN {
PADDING-RIGHT: 0.5em; DISPLAY: block; PADDING-LEFT: 0.5em; FLOAT: left; MARGIN-BOTTOM: 5px; PADDING-BOTTOM: 0.3em; MARGIN-RIGHT: 5px; PADDING-TOP: 0.3em
}
.pagination .current {
BORDER-RIGHT: #aae 1px solid; BORDER-TOP: #aae 1px solid; BACKGROUND: #26b; BORDER-LEFT: #aae 1px solid; COLOR: #fff; BORDER-BOTTOM: #aae 1px solid
}
.pagination .prev {
BORDER-LEFT-COLOR: #999999; BACKGROUND: #ffffff 0% 50%; BORDER-BOTTOM-COLOR: #999999; COLOR: #999999; BORDER-TOP-COLOR: #999999; BORDER-RIGHT-COLOR: #999999
}
.pagination .next {
BORDER-LEFT-COLOR: #999999; BACKGROUND: #ffffff 0% 50%; BORDER-BOTTOM-COLOR: #999999; COLOR: #999999; BORDER-TOP-COLOR: #999999; BORDER-RIGHT-COLOR: #999999
}
</STYLE>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/ga.js"
type=text/javascript></SCRIPT>
<SCRIPT language=javascript type=text/javascript>
//<![CDATA[
var pageTracker = _gat._getTracker("UA-115730-2");
pageTracker._setDomainName("ednchina.com");
pageTracker._initData();
pageTracker._trackPageview();
//]]>
</SCRIPT>
<SCRIPT id=ctl00_swfobject
src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/swfobject.js"
type=text/javascript></SCRIPT>
<SCRIPT language=javascript id=ctl00_jsplayerReady type=text/javascript>var player = null;
function playerReady(thePlayer) {
player = window.document[thePlayer.id];
eval(thePlayer.id + "addListeners()");
}
</SCRIPT>
<SCRIPT language=javascript type=text/javascript>function ctl00_Main_IndexVideoTech_IndexFlvPlayerswfaddListeners() {
if (player) {
player.addViewListener("PLAY", "OnClickPlay(152)");
} else {
setTimeout("addListeners()",100);
}
}
</SCRIPT>
<SCRIPT language=javascript type=text/javascript>var ctl00_Main_IndexVideoTech_IndexFlvPlayerflashvars = {
file:"http://webcast.reedbusiness.com.cn:8080/edn/ti/ThankAnEngineerBreakUpMandarin11_26.flv",
image:"http://webcast.reedbusiness.com.cn:8080/edn/ti/ti_breakup.jpg",
stretching:"exactfit"
}
var ctl00_Main_IndexVideoTech_IndexFlvPlayerparams = {
allowfullscreen:"true",
allowscriptaccess:"always"
}
var ctl00_Main_IndexVideoTech_IndexFlvPlayerattributes = {
id:"ctl00_Main_IndexVideoTech_IndexFlvPlayerswf",
name:"ctl00_Main_IndexVideoTech_IndexFlvPlayerswf"
}
</SCRIPT>
<META content="MSHTML 6.00.2900.5726" name=GENERATOR></HEAD>
<BODY>
<FORM id=aspnetForm name=aspnetForm action=20090304103340.htm method=post>
<DIV><INPUT id=__EVENTTARGET type=hidden name=__EVENTTARGET> <INPUT
id=__EVENTARGUMENT type=hidden name=__EVENTARGUMENT> <INPUT id=__VIEWSTATE
type=hidden
value=/wEPDwUKLTMzNTQyODU1OGQYAQUWY3RsMDAkTG9naW5WaWV3Q29udHJvbA8PZAIBZPs9x+Qnt2QysGqruhNwBv4oUMWR
name=__VIEWSTATE> </DIV>
<SCRIPT type=text/javascript>
//<![CDATA[
var theForm = document.forms['aspnetForm'];
if (!theForm) {
theForm = document.aspnetForm;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
//]]>
</SCRIPT>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/WebResource.axd"
type=text/javascript></SCRIPT>
<SCRIPT type=text/javascript>
//<![CDATA[
var articleid='57299',userid='291300';//]]>
</SCRIPT>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/VideoPlay.htm"
type=text/javascript></SCRIPT>
<SCRIPT type=text/javascript>
//<![CDATA[
ad_list +=':1241:';ad_list +=':1041:';ad_list +=':1320:';ad_list +=':1211:';ad_list +=':798:';ad_list +=':1318:';//]]>
</SCRIPT>
<SCRIPT src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/ScriptResource.axd"
type=text/javascript></SCRIPT>
<SCRIPT
src="C:\Documents and Settings\Administrator\桌面\EDN-原创-模拟\多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files\ScriptResource(1).axd"
type=text/javascript></SCRIPT>
<DIV id=wrapper><!--middle start-->
<DIV class=sub_container id=ctl00_ContentContainer>
<SCRIPT type=text/javascript>
//<![CDATA[
Sys.WebForms.PageRequestManager._initialize('ctl00$Main$ScriptManager1', document.getElementById('aspnetForm'));
Sys.WebForms.PageRequestManager.getInstance()._updateControls([], [], [], 90);
//]]>
</SCRIPT>
<!--top ad 800x80 start-->
<DIV class=ad id=ctl00_Main_AdvertisemantBar1></DIV><!--top ad 800x80 end-->
<DIV class="ad float_left" id=ctl00_Main_AdvertisemantBar9><SPAN><A
href="http://article.ednchina.com/adlink.aspx?did=1241&page=http%3a%2f%2fbbs.ednchina.com%2fadi%2f"
target=_blank alt="EDN China"><IMG style="WIDTH: 800px; HEIGHT: 80px"
src=""></A></SPAN> </DIV>
<DIV class="ad float_right" id=ctl00_Main_AdvertisemantBar10><SPAN><A
href="http://article.ednchina.com/adlink.aspx?did=1041&page=http%3a%2f%2fspace.ednchina.com%2fMember%2fRegister.aspx"
target=_blank alt="EDN China"><IMG style="WIDTH: 145px; HEIGHT: 80px"
src=""></A></SPAN> </DIV>
<DIV class=clear></DIV><!--article search-->
<DIV id=globalsearch>
<DIV class="search white center">
<FIELDSET><LEGEND>EDN首页登录区</LEGEND>
<SCRIPT language=javascript type=text/javascript>
window.onload = function()
{
if(isFirefox=navigator.userAgent.indexOf("Firefox")>0)
{
document.getElementById('q').onkeyup = eekooSearchKeydown;
}
}
</SCRIPT>
<P id=p8c8eedbd-72ba-4edc-ad6c-79e21dad5b1c><INPUT class="searchtext pdlr5px"
id=q onkeyup="eekooSearchKeydown(this,'')"
onfocus="LoginOnFocus(this,'E库:电子行业领先的垂直搜索引擎')"
onclick=clearSearchCondition(this); size=60 value=E库:电子行业领先的垂直搜索引擎 name=q> <SPAN
id=eekoo_right><IMG id=Img7628819f-c48e-4ab3-8511-70a97342efe1
style="CURSOR: pointer" onclick="return eekooSimpleSearch(this,'')"
src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/searchbutton.gif" align=absMiddle>
<INPUT type=radio CHECKED value=ednchina.com
name=7faff611-7961-44b0-aa2c-35653b67d797> EDN网页 <INPUT type=radio value=""
name=7faff611-7961-44b0-aa2c-35653b67d797> 所有网页 </SPAN><SPAN class=eekooalpha><A
href="http://search.ednchina.com/" target=_blank><IMG height=24 alt=eekoo
src="多路复用方法带来引脚数量更少的LED显示器 -- EDN电子设计技术.files/eekoo_alpha.gif" width=73
align=absMiddle border=0></A></SPAN> </P></FIELDSET> </DIV></DIV><!--article search end--><!--article content-->
<DIV class=clear id=article><!--left article content-->
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -