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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.
In academic year a researcher can either be employed as a professor or a lab assistant.there are three kinds of professors: assistant,associate and full professors.drow E-R DIAGRAM
what are the applications of photochemistry?
What is interpreter? An interpreter is a program that appears to execute a source program as if it were machine language.
Define Realization of one flip flop using other flip flops? It is probable to implement a flip flop circuit using any other circuit. Universal block diagram is shown below.
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Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various luminous jewels of particular colour. Nec
What is operations of microprocessor
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State the various Security Tools Securing an Intranet is not a simple task. Just as articles in a house are protected by use of various types of security systems such as lock
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