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\newcommand{\twolines}[2]{\begin{tabular}{c}#1\\#2\end{tabular}}
\scalebox{0.8}{
\begin{tikzpicture}[
-latex,
entity/.style = {
draw=lightGray,
thick,
ellipse,
minimum height=1.75cm,
top color = lightGray,
bottom color = white,
},
plain/.style = {
draw=none,
},
arrow/.style = {
draw = black,
-triangle 90,line width=1mm,
postaction={draw, line width=0.1cm, shorten >=0.1cm, -},
},
cs/.style = {
draw=lightGray,
thick,
cloud,
cloud puffs = 15.7,
cloud ignores aspect,
},
]
\node[entity] (vlsi) at (0,0) {Electronics};
\node[entity, right=of vlsi] (hwa) {\twolines{Hardware}{architecture}};
\node[entity, right=of hwa] (si) {\twolines{Software}{infrastructure}};
\node[entity, right=of si] (as) {\twolines{Software}{development}};
\path[arrow] (vlsi) -- (hwa);
\path[arrow] (hwa) -- (si);
\path[arrow] (si) -- (as);
\coordinate(l) at ($ (vlsi) !.5! (hwa) $);
\coordinate(m) at ($ (hwa) !.5! (si) $);
\coordinate(r) at ($ (si) !.5! (as) $);
\pause
\node[plain, text=darkGreen, above=of l] {Computer parts};
\pause
\node[plain, text=darkBlue, below=of m] {Hardware-software relation};
\pause
\node[plain, text=darkRed, above=of r] {Programming and software engineering};
\pause
\node[cs, above=1cm of si] {%
\begin{tabular}{c}
Networking, security, and\\
distributed computing
\end{tabular}
};
\end{tikzpicture}
}
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