?? 點(diǎn)陣式漢字led顯示屏的原理與制作.htm

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<HTML><HEAD><TITLE>點(diǎn)陣式漢字LED顯示屏的原理與制作&nbsp;&nbsp; 石學(xué)軍</TITLE><LINK 
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      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><IMG height=91 
      src="點(diǎn)陣式漢字LED顯示屏的原理與制作.files/titou2.jpg" width=770 align=center 
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      <P class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT 
      color=#272727 size=5><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">點(diǎn)陣式漢字</SPAN><SPAN 
      lang=EN-US>LED</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">顯示屏的原理與制作</SPAN><SPAN 
      lang=EN-US style="mso-spacerun: yes">&nbsp;&nbsp; </SPAN></FONT><FONT 
      color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">石學(xué)軍</SPAN></FONT></P>
      <P class=MsoNormal align=center><SPAN lang=EN-US><FONT color=#272727 
      font><O:P></O:P></FONT></SPAN><FONT color=#ff0000 font>注： 
      本文版權(quán)屬www.51c51.com 51單片機(jī)學(xué)習(xí)網(wǎng)所有如需要轉(zhuǎn)載請(qǐng)著名出處！</FONT></P>
      <P class=MsoNormal 
      style="TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 
      font>漢字顯示屏廣泛應(yīng)用與汽車報(bào)站器，廣告屏等。本文介紹一種實(shí)用的漢字顯示屏的制作，考慮到電路元件的易購(gòu)性，沒有使用</FONT></SPAN><FONT 
      color=#272727 font><SPAN lang=EN-US>8*8</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的點(diǎn)陣發(fā)光管模塊，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">而是直接使用了</SPAN><SPAN 
      lang=EN-US>256</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個(gè)高量度發(fā)光管，組成了</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; 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: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列的發(fā)光點(diǎn)陣。同時(shí)為了降低制作難度，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">僅作了一個(gè)字的輪流顯示，實(shí)際使用時(shí)可根據(jù)這個(gè)原理自行擴(kuò)充顯示的字?jǐn)?shù)。</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"><SPAN 
      lang=EN-US><FONT color=#272727 font>1</FONT></SPAN><FONT color=#272727 
      font><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">漢字顯示的原理：</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: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">我們以</SPAN><SPAN 
      lang=EN-US>UCDOS</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中文宋體字庫(kù)為例，每一個(gè)字由</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; 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: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列的點(diǎn)陣組成顯示。即國(guó)標(biāo)漢字庫(kù)中的每一個(gè)字均由</SPAN><SPAN 
      lang=EN-US>256</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">點(diǎn)陣來表示。我們可以把每一個(gè)點(diǎn)理解為一個(gè)像素，而把每一個(gè)字的字形理解為一幅圖像。事實(shí)上這個(gè)漢字屏不僅可以顯示漢字，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">也可以顯示在</SPAN><SPAN 
      lang=EN-US>256</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">像素</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: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">范圍內(nèi)的任何圖形。</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"><SPAN 
      lang=EN-US><FONT color=#272727 font><!--[if gte vml 1]><V:SHAPETYPE 
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      <P>　</P></TD></TR>
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      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font><O:P></O:P></FONT></SPAN></P>
      <P class=MsoNormal><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"><FONT 
      color=#272727 font>我們以顯示漢字“大”為例，來說明其掃描原理：</FONT></SPAN><FONT color=#272727 
      font> <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: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在</SPAN><SPAN 
      lang=EN-US>UCDOS</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中文宋體字庫(kù)中，每一個(gè)字由</SPAN><SPAN 
      lang=EN-US>16</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; 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: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列的點(diǎn)陣組成顯示。如果用</SPAN></FONT></P>
      <P class=MsoNormal><SPAN lang=EN-US><FONT color=#272727 
      font>8</FONT></SPAN><FONT color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">位的</SPAN><SPAN 
      lang=EN-US>AT89C51</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">單片機(jī)控制，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">由于單片機(jī)的總線為</SPAN><SPAN 
      lang=EN-US>8</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">位，一個(gè)字需要拆分為</SPAN><SPAN 
      lang=EN-US>2</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">個(gè)部分。</SPAN></FONT></P>
      <P class=MsoNormal><FONT color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一般我們把它拆分為上部和下部，上部由</SPAN><SPAN 
      lang=EN-US>8*16</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">點(diǎn)陣組成，</SPAN> 
      <SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">下部也由</SPAN><SPAN 
      lang=EN-US>8*16</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">點(diǎn)陣組成。</SPAN></FONT></P>
      <P class=MsoNormal><FONT color=#272727 font><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在本例中單片機(jī)首先顯示的是左上角的第一列的上半部分，即第</SPAN><SPAN 
      lang=EN-US>0</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">列的</SPAN><SPAN 
      lang=EN-US>p00---p07</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">口。方向?yàn)?lt;/SPAN><SPAN 
      lang=EN-US>p00</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">到</SPAN><SPAN 
      lang=EN-US>p07 ,</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">顯示漢字“大”時(shí)，</SPAN><SPAN 
      lang=EN-US>p05</SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">點(diǎn)亮</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'">由上往下排列，為</SPAN><SPAN 
      lang=EN-US>p0.0 </SPAN><SPAN 
      style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">滅，</SPAN><SPAN
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