\documentclass[12pt]{article}

\usepackage{ngerman,a4}
\usepackage{amstext}
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{stmaryrd}
\usepackage{enumerate}
\usepackage{alltt}
\usepackage[latin1]{inputenc}
\usepackage{graphicx}

\thispagestyle{empty}

\title{Computer Architecture 1 - Übungsblatt 9}
\author{Dirk Heine, 2030941 \\
	Jan Hendrik Dithmar, 2031259 \\
	Steffen Heil, 2019358
}
\date{}

\begin{document}

\newcommand{\AND}{\ensuremath{\wedge}}
\newcommand{\OR}{\ensuremath{\vee}}
\newcommand{\SetR}{\ensuremath{\mathbb{R}}}
\newcommand{\SetN}{\ensuremath{\mathbb{N}}}
\newcommand{\SetZ}{\ensuremath{\mathbb{Z}}}
\newcommand{\SetQ}{\ensuremath{\mathbb{Q}}}
\newcommand{\SetB}{\ensuremath{\mathbb{B}}}
\newcommand{\QED}{\ensuremath{\hspace*{\fill}\square}}
\newcommand{\FLASH}{\ensuremath{\hspace*{\fill}\lightning}}
\newcommand{\OnotO}{\ensuremath{\mathcal{O}}}
\newcommand{\bild}[4]{
	\begin{figure}[htpb]
		\centering
			\includegraphics[width=#1cm]{#2}\\[0.2cm]
			\caption{#3}
			\label{#4}
	\end{figure}
	}

\maketitle

\end{document}