em;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    }</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;};</div><div class="ttc" id="class_stack_html"><div class="ttname"><a href="class_stack.html">Stack</a></div><div class="ttdoc">A simple stack, used internally for keeping track of analog input channels as they are read...</div><div class="ttdef"><b>De