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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.
What is write-back or copy-back protocol? For a write operation using this protocol during write-hit: the method is to update only the cache and to mark it as updated with an a
Which datatype cannot be used to define parameters. Type F datatype is not used to explain parameters.
Explain the term- macro? A term macro is a set of instructions, which can be executed repeatedly. It is useful for automating certain routine tasks like printing reports etc. T
The ?rst task in the project is to develop a sane system to store change logs and versions of ?les. The simplest approach is to create a "dot" directory in the location of the ?le
what is the theory used to check whether a number is negative or positive?
Discrete Mathematics - (A?B)-(AnB)=(A-B)?(B-A) - prove by cases?? State which law you have used at each step. I''ve just started learning this, this semester .. and i havnt quite
Object Orientation and Analysis An Object is anything that exists within the problem domain that can be recognized by data and/or behaviour. An example of an object is a bike.
What is program controlled I/O? In program controlled I/O the processor repeatedly checks a status flag to achieve the needed synchronization among the processor and an input a
decomposition
The devices on the I2C bus are either masters or slaves. The master is the device that is responsible for driving the SCL clock line, while the slaves are the devices that respond
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