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Define Top-down parsing Techniques
Top-down parsing can be observed as an attempt to find left-most derivations of an input-stream through searching for parse trees using a top-down expansion of the specific formal grammar rules. Tokens are consumed to right from left.
Inclusive choice is employed to accommodate ambiguity by expanding all choice right-hand-sides of grammar rules.
Q. Find the complement of following functions and reduce to minimum literals 1. (A+C+D) (A+C+D') (A+C'+D)(A+D') 2. ABC(ABC' + AB'C + A'BC) 3. AB + AB' + A'C +A'C'
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