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				<title>8051 Microcontroller Projects AVR PIC Projects Tutorials Ebooks Libraries codes : Forum / topic</title>
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				<pubDate>Mon, 01 Dec 2008 12:23:28 -0800</pubDate>
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						<title>AT89C51ED2 microcontroller problems</title>
<link>http://www.8051projects.net/forum-t10364.html</link>
<description><![CDATA[i m given a task to use AT89C51ED2 which is one member of 8051 family . <br />if i using it to interface a LCD via port 2 , do i nid to put pull up resistor ? <br />whats the main purpose of putting pull up resistor ? <br />are this apply to port 0 as well ?<br />Thank you]]></description>
<pubDate>Thu, 26 Jun 2008 20:27:12 -0700</pubDate>
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						<title>Re: AT89C51ED2 microcontroller problems</title>
<link>http://www.8051projects.net/forum-t10364.html</link>
<description><![CDATA[P2 does not requires external pull up resistor as P2 already has internal pull up resistor. Only P0 requires external pull up resister when interfacing with external devices because it does not have internal pull up.]]></description>
<author>ntung&lt;ntung8@nospam.com&gt;</author>
<pubDate>Fri, 27 Jun 2008 00:53:09 -0700</pubDate>
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