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📁 单片机C语言教程 初学单片机的非常实用.
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                  align=center><SPAN style="FONT-FAMILY: 宋体">印刷在芯片面上的型号<SPAN 
                  lang=EN-US><O:P></O:P></SPAN></SPAN></P></TD>
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                  style="FONT-FAMILY: 宋体">AT89C51<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">xxxx<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">YYWW<O:P></O:P></SPAN></P></TD>
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                  <P class=MsoNormal style="TEXT-ALIGN: center" 
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                  style="FONT-FAMILY: 宋体">AT89LV51<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">xxxx<O:P></O:P></SPAN></P>
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                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">AT89C51<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">xxxx-5<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">YYWW<O:P></O:P></SPAN></P></TD>
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                  style="FONT-FAMILY: 宋体">AT89LV51<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">xxxx-5<O:P></O:P></SPAN></P>
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                  style="FONT-FAMILY: 宋体">YYWW<O:P></O:P></SPAN></P></TD></TR>
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                  align=center><SPAN style="FONT-FAMILY: 宋体">片内特征字<SPAN 
                  lang=EN-US><O:P></O:P></SPAN></SPAN></P></TD>
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                style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 71.05pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 5.25pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
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                  style="FONT-FAMILY: 宋体">030H=1EH<O:P></O:P></SPAN></P></TD>
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                  <P class=MsoNormal style="TEXT-ALIGN: center" 
                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">030H=1EH<O:P></O:P></SPAN></P></TD></TR>
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                  style="FONT-FAMILY: 宋体">031H=51H<O:P></O:P></SPAN></P></TD>
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                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">031H=61H<O:P></O:P></SPAN></P></TD>
                <TD 
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                  style="FONT-FAMILY: 宋体">031H=51H<O:P></O:P></SPAN></P></TD>
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                  style="FONT-FAMILY: 宋体">031H=61H<O:P></O:P></SPAN></P></TD></TR>
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                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">032H=FFH<O:P></O:P></SPAN></P></TD>
                <TD 
                style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 71.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 5.25pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
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                  <P class=MsoNormal style="TEXT-ALIGN: center" 
                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">032H=FFH<O:P></O:P></SPAN></P></TD>
                <TD 
                style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 71.05pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 5.25pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
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                  <P class=MsoNormal style="TEXT-ALIGN: center" 
                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">032H=05H<O:P></O:P></SPAN></P></TD>
                <TD 
                style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 71.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 5.25pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" 
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                  align=center><SPAN lang=EN-US 
                  style="FONT-FAMILY: 宋体">032H=05H<O:P></O:P></SPAN></P></TD></TR></TBODY></TABLE></TD></TR>
        <TR>
          <TD>
            <DIV align=center>表2－3　Vpp与芯片型号和片内特征字的关系<BR></DIV></TD></TR>
        <TR>
          <TD>　　看到这您对AT89C51引脚的功能应该有了一定的了解了，引脚在编程和校验时的时序我们在这里就不做详细的探讨，通常情况下我们也没有必要去撑握它，除非你想自己开发编程器。下来的课程我们要开始以一些简单的实例来讲述C程序的语法和编写方法技巧，中间穿插相关的硬件知识如串口，中断的用法等等。<BR></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
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      <DIV align=center>联系地址：浙江省杭州市拱北小区永和坊9幢504室 徐玮 
      邮政编码：310015<BR>Email:xu169@sina.com QQ:12739176 联系电话：0571-85956028(小灵通) 
      手机：13185018567(短信)<BR>杭州电子&amp;计算机工作室 版权所有 <BR>COPYRIGHT2003 HangZhou 
      Electron&amp;Computer Studio. All rights reserved 
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