Overview of Operating System

Introduction:-

What is Computer:-

Computer is an electronic device that is used to process data. Everyone in this world is aware of computer and its uses in various sectors. A computer mainly consists of software and hardware. Various kinds of software and hardware are available.

This Chapter focuses on the most important software that is required in every computer i.e. system software. It explains the needs, types and functions of system software. The chapter starts with the definition and types of software and the functions. The main motive is to make you understand the function and benefit of operating system.


1.1 SOFTWARE

 We know that the computer performs tasks as instructed by the user. User supplies these order or instructions by using different softwares. Software is a set of programs, which performs a well-defined functions. A program is a set of instructions of a computer language, written in a sequence to solve a particular problem. Several related programs may be grouped to create software. These software are created by programmers and distributed by using disks or the internet.


DEFINITION :

Software is a set of programs, which performs a well-defined function. A program is a set of instructions of a computer language, written in a sequence to solve a particular problem.


For example, a software to automate the admission and fee system in a college, will have a program for admission in which the record of each student is inserted. The other program for fees will manage various kinds of fees as per the facilities opted by the student at the time of admission. There may be a program to keep track of the attendance record of a student and a program to manage fines collected from different student under various categories.