点阵式汉字led显示屏的原理与制作.htm

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      lang=EN-US>p0.1 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">灭</SPAN><SPAN 
      lang=EN-US>, p0.2 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">灭</SPAN><SPAN 
      lang=EN-US>p0.3 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">灭</SPAN><SPAN 
      lang=EN-US>, p0.4 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">灭</SPAN><SPAN 
      lang=EN-US>, p0.5 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">亮</SPAN><SPAN 
      lang=EN-US>,p0.6 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">灭</SPAN><SPAN 
      lang=EN-US>,p0.7 </SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">灭。即二进制</SPAN><SPAN 
      lang=EN-US>00000100</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，转换为</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进制为</SPAN><SPAN 
      lang=EN-US> 04h.</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN></FONT></P>
      <P class=MsoNormal><FONT color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上半部第一列完成后，继续扫描下半部的第一列，为了接线的方便，我们仍设计成由上往下扫描，即从</SPAN><SPAN 
      lang=EN-US>p27</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">向</SPAN><SPAN 
      lang=EN-US>p20</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">方向扫描，从上图可以看到，这一列全部为不亮，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">即为</SPAN><SPAN 
      lang=EN-US>00000000</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进制则为</SPAN><SPAN 
      lang=EN-US>00h</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN 
      lang=EN-US><O:P> </O:P></SPAN></FONT></P>
      <P class=MsoNormal 
      style="TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><FONT 
      color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">然后单片机转向上半部第二列，仍为</SPAN><SPAN 
      lang=EN-US>p05</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">点亮，为</SPAN><SPAN 
      lang=EN-US>00000100</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，即</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进制</SPAN><SPAN 
      lang=EN-US>04h.</SPAN></FONT></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 font>这一列完成后继续进行下半部分的扫描，</FONT></SPAN><FONT color=#272727 
      font><SPAN lang=EN-US>p21</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">点亮，为二进制</SPAN><SPAN 
      lang=EN-US>00000010</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，即</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进制</SPAN><SPAN 
      lang=EN-US>02h.</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US style="mso-spacerun: yes"><FONT 
      color=#272727 font>&nbsp;&nbsp; </FONT></SPAN><FONT color=#272727 
      font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">依照这个方法，继续进行下面的扫描，一共扫描</SPAN><SPAN 
      lang=EN-US>32</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个</SPAN><SPAN 
      lang=EN-US>8</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">位，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">可以得出汉字“大</SPAN><SPAN 
      lang=EN-US>”</SPAN></FONT></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 font>的扫描代码为：</FONT></SPAN></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font>04H,00H,04H,02H,04H,02H,04H,04H</FONT></SPAN></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font>04H,08H,04H,30H,05H,0C0H,0FEH,00H</FONT></SPAN></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font>05H,80H,04H,60H,04H,10H,04H,08H</FONT></SPAN></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font>04H,04H,0CH,06H,04H,04H,00H,00H</FONT></SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 font>由这个原理可以看出，</FONT></SPAN><FONT color=#272727 font> <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">无论显示何种字体或图像，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">都可以用这个方法来分析出它的扫描代码从而显示在屏幕上。</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US style="mso-spacerun: yes"><FONT 
      color=#272727 font>&nbsp;&nbsp; </FONT></SPAN><FONT color=#272727 
      font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不过现在有很多现成的汉字字模生成软件，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们就不必自己去画表格算代码了。</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 font><!--[if gte vml 1]><V:SHAPE id=_x0000_i1027 
      style="WIDTH: 4in; HEIGHT: 216.75pt" type="#_x0000_t75"><V:IMAGEDATA 
      o:title="999" src="16hanz3.jpg" /></V:SHAPE><![endif]--><IMG height=289 
      src="点阵式汉字LED显示屏的原理与制作.files/16hanz3.jpg" width=384 
      v:shapes="_x0000_i1027"><O:P> </O:P></FONT></SPAN></P>
      <P class=MsoNormal 
      style="TEXT-INDENT: 31.5pt; mso-char-indent-count: 3.0; mso-char-indent-size: 10.5pt"><FONT 
      color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">软件打开后输入汉字，点“检取</SPAN><SPAN 
      lang=EN-US>”</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，十六进制数据的汉字代码即可自动生成，把我们所需要的竖排数据复制到我们的程序中即可。</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US style="mso-spacerun: yes"><FONT 
      color=#272727 font>&nbsp;&nbsp; </FONT></SPAN><FONT color=#272727 
      font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我们把行列总线接在单片机的</SPAN><SPAN 
      lang=EN-US>i0</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">口，然后把上面分析到的扫描代码送入总线，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">就可以得到显示的汉字了。</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在这个例子里，由于一共用到</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">行，</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">如果将其全部接入</SPAN><SPAN 
      lang=EN-US>89c51</SPAN></FONT></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 font>单片机，</FONT></SPAN><FONT color=#272727 font> <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一共使用</SPAN><SPAN 
      lang=EN-US>32</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">条</SPAN><SPAN 
      lang=EN-US>io</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">口，这样造成了</SPAN><SPAN 
      lang=EN-US>io</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">资源的耗尽，系统也再无扩充的余地。</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">实际应用中我们使用</SPAN><SPAN 
      lang=EN-US>4-16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">线译码器</SPAN><SPAN 
      lang=EN-US>74ls154</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">来完成列方向的显示。</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而行方向</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">条线则接在</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font>p0</FONT></SPAN><FONT color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">口和</SPAN><SPAN 
      lang=EN-US>p2</SPAN><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">口。</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 font><!--[if gte vml 1]><V:SHAPE id=_x0000_i1028 
      style="WIDTH: 387pt; HEIGHT: 322.5pt" type="#_x0000_t75"><V:IMAGEDATA 
      gain="74473f" o:title="hanzi" 
      src="file:///C:/WINDOWS/TEMP/msoclip1/01/clip_image006.jpg" /></V:SHAPE><![endif]--><IMG height=430 
      src="点阵式汉字LED显示屏的原理与制作.files/16hanz4.jpg" width=516 
      v:shapes="_x0000_i1028"></FONT></SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 font>程序清单：</FONT></SPAN></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 font>ORG<SPAN