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📄 单片机坐标用8051控制报警产生实例.htm

📁 http://www.edacn.net/cgi-bin/forums.cgi?forum=7&topic=9127下,则R3~R0的输出信号中会有一个为1,但我们还是是无法确定哪一个键被按下,必須要
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📖 第 1 页 / 共 3 页
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                  style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 9pt; LINE-HEIGHT: 12pt; mso-char-indent-count: 1.0; mso-line-height-rule: exactly"><SPAN 
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                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  face="Times New Roman"><st1:place w:st="on"><SPAN lang=EN-US 
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                  style="mso-tab-count: 1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  face="Times New Roman"><SPAN 
                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  w:st="on">LOOP</st1:place><o:p></o:p></FONT></SPAN></P>
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                  style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 12pt; mso-line-height-rule: exactly"><SPAN 
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                  face="Times New Roman"><SPAN 
                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  style="mso-tab-count: 2">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
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                  <P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN 
                  lang=EN-US><o:p><FONT 
                  face="Times New Roman">&nbsp;</FONT></o:p></SPAN></P>
                  <P class=MsoNormal 
                  style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><SPAN 
                  lang=EN-US><o:p></o:p></SPAN></SPAN>&nbsp;</P><SPAN 
                  lang=EN-US><o:p></o:p></SPAN></SPAN></B></o:p></SPAN></SPAN>
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