Finite automata theory, studied in the previous chapter, can be viewed as a theory that investigates problem oriented computations. Generally speaking, problem oriented computations solve certain problems about data. Computer programmers as well as users deal with problem oriented computations daily. A programmer, given a computer program and an input, runs the program on the input, and the program gives an output upon termination thus solving a certain problem about the input. Therefore, for these programs, nontermination is considered to be a failure.
KeywordsDine Prefix Decid
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