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The state machine described in the previous section is a deterministic finite automaton, in which each state is unique. What would make a finite automaton nondeterministic is if each state was not. For the example, if the state machine allowed the input to have any letter as the second letter for the word "person" to transition to the next, then the next state would not be unique, making it a nondeterministic finite automaton.

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What is the difference between deterministic finite automata and non deterministic finite automata?

A deterministic Finite Automata)DFA will have a single possible output for a given input.The answer is deterministic because you can always feel what the output will be.A (Nondeterministic Finite Automata)NFA will have at least one input which will cause a "choice" to be made during a state transition,unlike a (deterministic Finite Automata)DFA one input can cause multiple outputs for a given (Nondeterministic Finite Automata)NFA.


Can DFA simulate NFA?

Yes, a Deterministic Finite Automaton (DFA) can simulate a Non-deterministic Finite Automaton (NFA). This can be achieved by constructing an equivalent DFA for a given NFA using the subset construction method. In this method, each state of the DFA represents a set of states of the NFA, and transitions are defined based on the transitions of the NFA. By following this approach, a DFA can effectively simulate the behavior of an NFA.


Distinguish between dfa and nfa?

DFA stands for Deterministic finite automaton and NFA stands for Nondeterministic finite automaton.Formally, an automaton is made up of: were delta is the transition function. In a DFA, delta takes as input a state and letter and returns only one state. In an NFA, delta takes as input a state and letter but returns a set of states.An NFA accepts a word iff there exists a run of the automaton on it (intuitively, the automaton guesses an accepting run). A DFA has only one run on every word and therefore accepts a word iff the single run on it is accepting.


Difference between active and passive elements?

Active components can deliver a finite amount of power for some finite amount of time period where passive components can not deliver finite amount of power for some finite amount of time.


Describe how lexical analyzer generators are used to translate regular expressions into deterministic finite automata?

Lexical analyzer generators translate regular expressions (the lexical analyzer definition) into finite automata (the lexical analyzer). For example, a lexical analyzer definition may specify a number of regular expressions describing different lexical forms (integer, string, identifier, comment, etc.). The lexical analyzer generator would then translate that definition into a program module that can use the deterministic finite automata to analyze text and split it into lexemes (tokens).

Related Questions

Difference between deterministic finite automata and non deterministic finite automata?

A deterministic finite automaton will have a single possible output for a given input. The answer is deterministic because you can always tell what the output will be. A nondeterministic finite automaton will have at least one input which will cause a "choice" to be made during a state transition. Unlike a DFA, one input can cause multiple outputs for a given NFA.


What did nfa stand for?

NFA - Non-deterministic Finite Automaton, aka NFSM (Non-deterministic Finite State Machine)


What is difference between finite state automaton and transition graph?

finite automata


Can you construct a DFA that accepts the language specified?

Yes, a DFA (Deterministic Finite Automaton) can be constructed to accept the specified language.


How can one convert a deterministic finite automaton (DFA) to a pushdown automaton (PDA)?

To convert a deterministic finite automaton (DFA) to a pushdown automaton (PDA), you need to add a stack to keep track of the state transitions. The PDA uses the stack to store and retrieve symbols, allowing for more complex computations than a DFA. This conversion involves modifying the transition functions and adding stack operations to handle the additional complexity of the PDA.


How can I convert a deterministic finite automaton (DFA) to a regular expression?

To convert a deterministic finite automaton (DFA) to a regular expression, you can use the state elimination method. This involves eliminating states one by one until only the start and accept states remain, and then combining the transitions to form a regular expression that represents the language accepted by the DFA.


How can a deterministic finite automaton (DFA) be converted into a regular expression?

A deterministic finite automaton (DFA) can be converted into a regular expression by using the state elimination method. This involves eliminating states one by one until only the start and accept states remain, and then combining the transitions to form a regular expression that represents the language accepted by the DFA.


What is the difference between deterministic finite automata and non deterministic finite automata?

A deterministic Finite Automata)DFA will have a single possible output for a given input.The answer is deterministic because you can always feel what the output will be.A (Nondeterministic Finite Automata)NFA will have at least one input which will cause a "choice" to be made during a state transition,unlike a (deterministic Finite Automata)DFA one input can cause multiple outputs for a given (Nondeterministic Finite Automata)NFA.


What is relation between regular languages finite automaton and regular grammars?

finite automaton is the graphical representation of language and regular grammar is the representation of language in expressions


What is the significance of the DFA for the empty set in automata theory?

The DFA for the empty set in automata theory is significant because it represents a finite automaton that cannot accept any input strings. This helps in understanding the concept of unreachable states and the importance of having at least one accepting state in a deterministic finite automaton.


Can DFA simulate NFA?

Yes, a Deterministic Finite Automaton (DFA) can simulate a Non-deterministic Finite Automaton (NFA). This can be achieved by constructing an equivalent DFA for a given NFA using the subset construction method. In this method, each state of the DFA represents a set of states of the NFA, and transitions are defined based on the transitions of the NFA. By following this approach, a DFA can effectively simulate the behavior of an NFA.


What is full form of DFA and NFA?

DFA - deterministic finite automata NFA - non-deterministic finite automata