\usetikzlibrary{shapes.geometric,}




\begin{tikzpicture}[thick,
	io/.style={
		trapezium,
		trapezium left angle=70,
		trapezium right angle=110,
		fill=magenta!10,
		draw=magenta
	},
	op/.style={
		rectangle,
		fill=orange!10,
		draw=orange	
	},
	cn/.style={
		diamont,
		aspect=2
		inner sep=2pt,
		fill=red!10,
		draw=red
	},
	node distance=5mm
]

	\node at (0,4) [draw,io] {Eingabe};
\end{tikzpicture}