Category Archives: Articles

Matrix Introduction

A matrix represents a collection of numbers arranged in an order of rows and columns. It is necessary to enclose the elements of a matrix in parentheses or brackets. A matrix with 9 elements is shown below. This Matrix [M] has 3 rows and 3 columns. Each element of matrix [M] can be referred to… Read More »



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File Systems | Operating System

A file is a collection of related information that is recorded on secondary storage. Or file is a collection of logically related entities. From user’s perspective a file is the smallest allotment of logical secondary storage. There are various file types with their associated functions. FILE DIRECTORIES: Collection of files is a file directory. The… Read More »



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Virtual Memory | Operating System

Virtual Memory is a storage allocation scheme in which secondary memory can be addressed as though it were part of main memory. The addresses a program may use to reference memory are distinguished from the addresses the memory system uses to identify physical storage sites, and program generated addresses are translated automatically to the corresponding… Read More »



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Parsing | Set 3 | Compiler Design

In this article we are discussing the SLR parser, CLR parser and LALR parser which are the parts of Bottom Up parser. SLR Parser The SLR parser is similar to LR(0) parser except that the reduced entry. The reduced productions are written only in the FOLLOW of the variable whose production is reduced. Construction of… Read More »



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Parsing | Set 2 | Compiler Design

In this article we are discussing the Bottom Up parser. Bottom Up Parsers / Shift Reduce Parsers Build the parse tree from leaves to root. Bottom up parsing can be defined as an attempt to reduce the input string w to the start symbol of a grammar by tracing out the rightmost derivations of w… Read More »



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Parsing | Set 1 | Compiler Design

In this article we will study about various types of parses. It is one of the most important topic in Compiler from GATE point of view. The working of various parsers will be explained from GATE question solving point of view. Prerequisite – basic knowledge of grammars, parse trees, ambiguity. Role of the parser :… Read More »



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