--- a/ChengsongTanPhdThesis/Chapters/tape.tex	Fri Jun 03 16:45:30 2022 +0100
+++ b/ChengsongTanPhdThesis/Chapters/tape.tex	Mon Jun 06 03:05:31 2022 +0100
@@ -1,55 +1,16 @@
-\documentclass{standalone}
-\usepackage[utf8]{inputenc}
-\usepackage{ifthen}
-\usepackage{tikz}
-\usetikzlibrary{chains}
-\usetikzlibrary{calc, decorations.pathmorphing}
-\tikzstyle{tape}=[thick, draw, minimum height=5mm, minimum width=7mm, fill=green!35,outer sep=0pt]
-\tikzstyle{head}=[very thick, draw, minimum height=6mm, minimum width=7mm, fill=none,outer sep=0pt]
+\documentclass[tikz, border=10pt]{standalone}
+\usetikzlibrary{shapes}
+
+
+
 
-\def\DrawTape#1{
-\begin{scope}[start chain=1 going right,node distance=-0.15mm]
-    % start tape
-    \node [on chain=1,tape,draw=none, tape, fill=none, draw=none] at (0,-\i*1) (node\i0){\ldots\ };
-    \draw [thick,fill=green!35] (node\i0.north east) -- ++(-.07,0) decorate [decoration={zigzag, segment length=.10cm, amplitude=.015cm}] 
-    {-- ($(node\i0.south east)+(-.15,0)$)} -- (node\i0.south east) -- cycle;
-    % draw tape 
-      \foreach [count=\j] \element in \adlist {     
-	  \ifthenelse{\j = \head}{ % read-write heads current position
-		    \node [on chain=1,tape, fill=red!35] (node\i\j){\element};
-	      }
-	      {
-		    \node [on chain=1,tape] (node\i\j) {\element};
-	      }
-      }    
-    % close tape
-    \draw [thick,fill=green!35] (node\i\j.north east) -- ++(.15,0) decorate [decoration={zigzag, segment length=.10cm, amplitude=.015cm}] 
-    {-- ($(node\i\j.south east)+(.07,0)$)} -- (node\i\j.south east) -- cycle;
-    \node [on chain=1,tape, fill=none, draw=none] (end\i) {\ \ldots};
-    \node [right = of end\i]{\tiny tape~\i};
-    
-    % draw read-write head
-    \prevnode=\head
-    \advance\prevnode by -1
-    \node [head,right = of node\i\the\prevnode] (head\i){};
-    \node [above = of head\i]{\tiny head \i};
-\end{scope}
-}
-\newcount\prevnode
 \begin{document}
-% Define the turing machine as a list of pairs, where each pair consists of the read-writes head position the delimiter "/" and  the list of symbols on the tape.
-\newcommand{\tapes}{ 3/{, , ,1,1, }, 1/{, 1, 0, 1 , 0,}, 2/{ , 1 , 1, 0, 1,}}
-\begin{tikzpicture}
-% Draw program node
-\draw (-1.5,-2) node [draw, thick, rectangle, minimum height= 2.5cm, minimum width=2cm, fill=white, rounded corners] (program){program};
 
-% Draw tapes and heads
-\foreach [count=\i] \head/\adlist in \tapes {
-    % Draw tape and head
-    \DrawTape{\i,\head,\adlist}
-    % Draw link to program
-    \draw[thick, rounded corners=3pt] (program) {-- ($(node\i0.south west) + (0,-0.15)$)} 
-	{-- ($(head\i.south) + (0,-0.1)$)}-- (head\i.south);
-}
+\begin{tikzpicture}[every node/.append style={draw, rounded corners, inner sep=10pt}]
+    \node [rectangle split, rectangle split horizontal, rectangle split parts=3]
+        {Services
+         \nodepart{two} Event Driven Framework
+         \nodepart{three} OS Adapter Layer};
+
 \end{tikzpicture}
 \end{document}
\ No newline at end of file