\begin{thebibliography}{1}

\bibitem{ttlref}
{\it The TTL Data Book for Design Engineers}.
\newblock Texas Instruments Incorporated, second edition, 1981.

\bibitem{latextex}
Leslie Lamport.
\newblock {\LaTeX}.
\newblock Computer Software. Addison Wesley, Feb 1988.
\newblock LATEX VERSION 2.09 $<$26 Feb 1988$>$.

\bibitem{tm:sig}
Tom Masotto.
\newblock Tools-11: simulator signal input/output data structure.
\newblock September 1986.
\newblock Thesis project.

\end{thebibliography}
