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<H1>pushdown automaton</H1>
<P>
(definition)

<P>
<strong>Definition:</strong>
A restricted <a href="turingmachin.html" tppabs="http://hissa.nist.gov/dads/HTML/turingmachin.html"><em>Turing machine</em></a> where the tape acts as a pushdown store (or <a href="stack.html" tppabs="http://hissa.nist.gov/dads/HTML/stack.html"><em>stack</em></a>, where only the latest element can be read), with an extra one-way read-only input tape.
<P><strong>See also</strong>
<a href="determpushda.html" tppabs="http://hissa.nist.gov/dads/HTML/determpushda.html"><em>deterministic pushdown automaton</em></a>.
<P><em>Note:
From Algorithms and Theory of Computation Handbook, page 24-19, Copyright &copy; 1999 by CRC Press LLC.</em>
<P>Author: <a href="terms.html#authorCRC-A" tppabs="http://hissa.nist.gov/dads/terms.html#authorCRC-A">CRC-A</a>

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Entry modified Mon Sep 27 12:11:04 1999.<BR>
HTML page formatted Wed Dec 22 09:36:15 1999.

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