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{\LARGE\bf \sf Software Engineering} \\
\vspace{0.15in} {\Large\bf \sf CSE470 \hspace*{4.0truein} Fall 2001} \\
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{\Large \bf \sf Homework 3 \hspace*{3.3truein} Due: 9/14/2001}
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\begin{enumerate}
\item Use Cases constitute a set of particular scenarios for
a system but don't describe every possible circumstance the system
will encounter. Briefly describe how one gets from Use Cases to design.

\answer{}

\item Why is it important to set the system boundary? In the Point of
Sale system discussed in class, which side of the boundary is most
likely for the low-level communications software that connects the
terminals to the central system? Briefly justify your answer.

\answer{}

\item What would Therac-25 use cases look like? Try only a few of the
more important ones. Do any possible use cases indicate the potential 
of an accident?

\answer{}

\end{enumerate}

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