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本单片机教程是平凡老师花了大量时间

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<font size="2" FACE="宋体" LANG="ZH-CN">如何，字形表会做了吧，就是这样列个表格，根据要求（</font><font size="2"><FONT FACE="System" LANG="ZH-CN">0</FONT><FONT FACE="宋体" LANG="ZH-CN">亮或</FONT><FONT FACE="System" LANG="ZH-CN">1</FONT><FONT FACE="宋体" LANG="ZH-CN">亮）写出相应位的</FONT><FONT FACE="System" LANG="ZH-CN">0</FONT><FONT FACE="宋体" LANG="ZH-CN">和</FONT><FONT FACE="System" LANG="ZH-CN">1</FONT><FONT FACE="宋体" LANG="ZH-CN">，就成了。做个练习，写出</FONT><FONT FACE="System" LANG="ZH-CN">A-F</FONT></font><font size="2" FACE="宋体" LANG="ZH-CN">的字形码吧。</font></P>
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<P ALIGN="JUSTIFY" style="line-height: 150%; margin-top: 0; margin-bottom: 0">如果为了接线方便而打乱了接线的顺序，那么字形表又该如何接呢？也很简单，一样地列表啊。以新实验板为例，共阳型。接线如下：</P></FONT> 
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<font size="2">P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0</font></P>
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<font size="2">C E H D G F A B</font></P>
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<P ALIGN="JUSTIFY" style="line-height: 150%; margin-top: 0; margin-bottom: 0">则字形码如下所示：</P>
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<font size="2">;0 00101000 28H</font></P>
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<font size="2">;1 01111110 7EH</font></P>
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<font size="2">;2 10100100 0A4H</font></P>
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<font size="2">;3 01100100 64H </font> </P>
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<font size="2">;4 01110010 72H</font></P>
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<font size="2">;5 01100001 61H </font> </P>
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<font size="2">;6 00100001 21H</font></P>
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<font size="2">;7 01111100 7CH</font></P>
<P ALIGN="JUSTIFY" style="line-height: 150%; margin-top: 0; margin-bottom: 0">
<font size="2">;8 00100000 20H</font></P>
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<font size="2">;9 01100000 60H</font></P>
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<font size="2" FACE="宋体" LANG="ZH-CN">作为练习，大家写出</font><FONT FACE="System" LANG="ZH-CN" size="2">A-F</FONT><font size="2" FACE="宋体" LANG="ZH-CN">的字形代码。</font></P>
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<font face="宋体" size="2">本来这里是讲解显示器的静态接口的，到此应当可算结束了，但是我还想接着上面讲到的数的本质的问题再谈一点。单片机中有一些术语、名词本来是帮助我们理解事物的，但有时我们会被这些术语的相关语义所迷惑，以致不能进一步认清他们的本质，由此往往陷入困惑的境界。只有深入地了解了74LS164的工作特性，才能真正理解何谓串行的数据。有兴趣的朋友还可以再看看我网站上“其他资料”中的“银行利率屏的设计”一文。</font></P>
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