?? 點陣式漢字led顯示屏的原理與制作.htm
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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"> </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：
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<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)用與汽車報站器，廣告屏等。本文介紹一種實用的漢字顯示屏的制作，考慮到電路元件的易購性，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)光點陣。同時為了降低制作難度，</SPAN>
<SPAN
style="FONT-FAMILY: 宋體; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">僅作了一個字的輪流顯示，實際使用時可根據(jù)這個原理自行擴充顯示的字?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'">中文宋體字庫為例，每一個字由</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'">列的點陣組成顯示。即國標(biāo)漢字庫中的每一個字均由</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'">點陣來表示。我們可以把每一個點理解為一個像素，而把每一個字的字形理解為一幅圖像。事實上這個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>
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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'">中文宋體字庫中，每一個字由</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。方向為</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，</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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