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Explain difference between Scanning and parsing.
Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsing is the process of checking the validity of a source string, and to find out its syntactic structure. The purpose for separating scanning from parsing is that the lexical characteristics of a language can be specified by using Type-3 grammars. All Type-3 production identifies lexical components is also a Type-2 production. Conversely, a recognizer for Type-3 productions is easier, simple to build and more efficient throughout execution than a recognizer for Type-2 productions. Therefore it is better to handle the lexical and syntactic elements of a source language separately.
Three Logic Levels are used and they are High, Low, High impedance state. The high and low are normal logic levels & high impedance state is electrical open circuit conditions. Tri
Explain about the term E-Cash. E-cash is cash demonstrated by two models. E-cash has one is on-line form of e-cash, that is introduced by DigiCash that permits for the completi
if 2 forces are equal at an angle alpha between them - its resultant R and its direction
Q. Example on Passing Parameters through Stack? PROGRAM: Version 3 DATA_SEG SEGMENT BCD DB 25h; Storage for BCD test value BIN
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Q.SHOW THAT AVERAGE NUMBER OF UNIT IN A (M/M/1) QUELING SYTEM IS EQUAL TO P/(1-p). NOTE:P=ROW
what is hashing
What are the risks by merchant's perspective in Electronic Payment Systems? Through merchant's perspective: • Copied or Forged payment instruments • Insufficient funds in
Evaluation function - canonical genetic algorithm: However note that this termination check may be related or the same as the evaluation function - that discussed later - but
A sequential circuit is signified by a time sequence of external inputs, external outputs and internal flip-flop binary states. So firstly a state diagram and state table is used t
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