pushdown automata.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Transcribed Image Text:Show how to construct a PDA accepting L(M,) U L(M,) where M, and M,
pushdown automata.
are
Expert Solution
Step 1
ANSWER:
Pushdown Automata:
A push down automata is like deterministic limited automata with the exception of that it has a couple of a bigger number of properties than a DFA.
The information structure utilized for carrying out a PDA is stack.
A PDA has a result related with each information. Every one of the information sources are either pushed into a stack or recently disregarded.
Client can play out the essential push and pop procedure on the stack which is use for PDA.
One of issues related with DFAs was that couldn't make the vast majority of number of characters which were given commitment to machine.
This issue is stayed away from by PDA as it utilizes a stack which gives us this office moreover.
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