?? 常用接口電路及其編程.htm
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<DIV class=Section1>
<P><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">常用接口電路及其編程</SPAN><SPAN
lang=EN-US style="mso-font-kerning: 0pt"><o:p></o:p></SPAN></P>
<P align=center
style="MARGIN-LEFT: 36pt; TEXT-ALIGN: center; TEXT-INDENT: -18pt; mso-list: l1 level1 lfo2; tab-stops: list 36.0pt"><![if !supportLists]><SPAN
lang=EN-US
style="COLOR: red; FONT-FAMILY: 黑體; FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt">1.<SPAN
style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN><![endif]><SPAN lang=EN-US
style="COLOR: red; FONT-FAMILY: 黑體; FONT-SIZE: 16pt; mso-bidi-font-size: 12.0pt">LED數碼顯示器的連接與編程<o:p></o:p></SPAN></P>
<P><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在單片機系統中，通常用</SPAN><SPAN
lang=EN-US style="FONT-FAMILY: System">LED</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">數碼顯示器來顯示各種數字或符號。由于它具有顯示清晰、亮度高、使用電壓低、壽命長的特點，因此使用非常廣泛。</SPAN></P>
<P
style="MARGIN-LEFT: 36pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo4; tab-stops: list 36.0pt"><![if !supportLists]><SPAN
lang=EN-US>1.<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN><![endif]><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">八段</SPAN><SPAN
lang=EN-US style="FONT-FAMILY: System">LED</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">顯示器</SPAN></P>
<P style="MARGIN-LEFT: 36pt"><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引入：還記得我們小時候玩的</SPAN><SPAN
lang=EN-US>“</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">火柴棒游戲</SPAN><SPAN
lang=EN-US>”</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">嗎，幾根火柴棒組合起來，可以拼成各種各樣的圖形，</SPAN><SPAN
lang=EN-US style="FONT-FAMILY: System">LED</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">顯示器實際上也是這么一個東西。</SPAN></P>
<P style="MARGIN-LEFT: 36pt"><SPAN lang=EN-US><IMG height=255 id=_x0000_i1025
src="常用接口電路及其編程.files/dpj251.gif" width=566></SPAN></P>
<P style="MARGIN-LEFT: 36pt"><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">八段</SPAN><SPAN
lang=EN-US style="FONT-FAMILY: System">LED</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">顯示器由</SPAN><SPAN
lang=EN-US style="FONT-FAMILY: System">8</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個發光二極管組成。基中</SPAN><SPAN
lang=EN-US style="FONT-FAMILY: System">7</SPAN><SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個長條形的發光管排列成</SPAN><SPAN
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