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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.
Define the System Analysis of Object oriented modelling System Analysis: In this stage a statement of the queries is formulated and a model is designed by the analyst in enc
Translator for low level programming language were called as Assembler
In digital ICs, Schottky transistors are preferred over normal transistors because of their ? Ans. Lower propagation delay in digital ICs, as shottky transistors reduce
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What is double data rate SDRAM? Double data rates SDRAM are those which can transfer data on both edges of the clock and their bandwidth is fundamentally doubled for long burs
Reprography: Reprography, as a term, has gained international recognition in 1963. It includes "photocopying , microcopying, duplicating and in-plant printing and is character
What are the various Design constraints used while performing Synthesis for a design? 1. Make the clocks (frequency, duty-cycle). 2. Explain the transition-time requirements
The field that contains a segment index or an internal index is called ? Ans. Target datum consists of a segment index or an internal index.
function nor gates W=A,B,C,D=~(AB)*~(CD)
What are the Input devices Various devices are available for data input on graphics workstations. Most systems have a keyboard and one or more additional devices specially desi
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