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 <description><![CDATA[数码管显示这个直接用PLC驱动的话太占IO口了吧]]></description>
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 <author><![CDATA[庞树恒]]></author>
 <category><![CDATA[西门子工控论坛]]></category>
 <pubdate><![CDATA[Tue, 22 Mar 2011 11:39:51 +0000]]></pubdate>
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 <description><![CDATA[怎么没有人啊？]]></description>
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 <author><![CDATA[天海]]></author>
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 <pubdate><![CDATA[Tue, 22 Mar 2011 05:53:58 +0000]]></pubdate>
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