symbols.htm

来自「一份51的编译程序,dos版本的. 英文名字MCS-51 Microcontr」· HTM 代码 · 共 73 行

HTM
73
字号
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<!-- Symbols -->

<HTML>

<HEAD>

<TITLE>Symbols</TITLE>

</HEAD>

<BODY BACKGROUND="spiral.gif" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#990099" ALINK="#FF0000">

<TABLE WIDTH="98%">
<TR><TD WIDTH=60 VALIGN=BOTTOM NOWRAP>
<IMG SRC="transp.gif" ALT="" WIDTH=60 HEIGHT=20>
</TD><TD>

<!-- Ab hier Seitentext: -->

<BIG>
<BR>

<P>
<STRONG><U>III.2 Symbols</U></STRONG>
</P>

<P>
Symbols are user-defined names for addresses, numbers or macros.<BR>
Their maximum significant length is 31 characters. They can be even
longer, but everything behind the first 31 characters is ignored.
Symbols may consist of letters, digits, '_' and '?' characters.
A symbol name must not start with a digit!
Upper and lower case letters are considered to be equivalent.<BR>
<STRONG>Note:</STRONG> Assembly language keywords must not be redefined as user symbols!
</P>

<P>
<BR>
<STRONG>Example:</STRONG>
<BLOCKQUOTE>
<PRE>
Is_this_really_a_SYMBOL_?       is a legal symbol name!
</PRE>
</BLOCKQUOTE>
</P>

</BIG>

<!-- Seitentext Ende -->

<P>
<BR>
<BR>
<CENTER>
<TABLE WIDTH="70%">
<TR><TH><A HREF="contents.htm"><IMG SRC="home.gif" ALT="[contents]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH>
    <TH><A HREF="language.htm"><IMG SRC="up.gif" ALT="[up]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH>
    <TH><A HREF="statemen.htm"><IMG SRC="back.gif" ALT="[back]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH>
    <TH><A HREF="constant.htm"><IMG SRC="next.gif" ALT="[next]" BORDER=0 WIDTH=32 HEIGHT=32></A></TH>
</TR>
</TABLE>
</CENTER>
</P>

</TD></TR>
</TABLE>

</BODY>

</HTML>

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?