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Give difference between top down parsing and bottom up parsing.
Top down parsing: Specified an input string, top down parsing tries to derive a string identical to this by successive application of grammar rules to the grammar's distinguished symbol. While such a string is acquired, a tree showing its derivation would be the syntax tree for an input string. Therefore if ? is input-string, a top-down parse finds a derivation sequence.
Bottom up parsing: This parse attempts to increase syntax tree for an input string by a sequence of reduction. If the input string can be decreased to the distinguished symbol, the string is valid. If string is not valid, error would be noticed and indicated during the process of reduction itself.
Exponential Search Another alternative to variable size decrease-and-conquer search is known as exponential search. This algorithm begins searching at the beginning of the list
Define Program Counter(PC) The Program Counter holds the address of the next instruction to be read from memory after the current instruction is implemented.
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What is assembly language? A complete set of symbolic names and rules for the use of machines comprise a programming language, usually referred to as an assembly language.
In a RAM, information can be stored ? Ans. RAM is used by the user, number of times.
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