Feb 24, 2013

COMPUTER SOFTWARE

SOFTWARES
A computer can only do what the programmer asks to do. To perform a particular task programmer prepares a sequence of instructions, called a program. A set of programs written for a particular computer is known as software for that computer.

                  So, software is an interface between the computer hardware and the users. Softwares are divided into three parts.



1.SYSTEM SOFTWARE
The hardware of computer system can do anything, software is required to direct it. System softwares are some sets of programs which are required by the computer system itself to run the process smoothly. In other words, these are some sets of programs which are used to control the operation of a computer. These programs are
Software
not needed directly by the user to perform a specific task. But in order to solve any task of the user, it is required internally by the computer. The system software is stored in ROM disks. It includes operating system, assembler, compiler, editor, BIOS etc. System software can be divided into three parts...


a>System management/control program.
b>System support program
c>System development program.

2.APPLICATION SOFTWARE
Application software is the set of softwares required by the computer to perform specific task of the user. So, any software which is designed to do any specific task is known as application software. Today large number of application softwares are available to solve specific type of problems. Some application softwares are of general nature, such as wordstar, foxpro, oracle, sybase, MS-Office etc. Some application softwares have been developed for specific purposes, such as for designing building structures, power systems, inventory control, sales control, sales invoicing, network analysis etc. Advantages of application softwares are as follows..

a>Users get tested and well organised programs.
b>No time is lost for the development of program.
c>Quick implementation of results.

Application software can be classified into the following various catagories...

a>Data management software.
b>Data processing software.
c>Presentation software.
d>Word processing and editing software.
e>Multimedia and animation software.
f>Productivity and CAD/CAM software.
g>Real time software.
h>Transaction processing software.
i>Web application software.
j>Driver and utility software.
k>Security software.
l>Scientific software.
m>Encyclopedia entertainment and educational software.

3.UTILITIES AND SERVICE SOFTWARE
These are a set of programs which helps users to perform outline tasks. Tasks performed by utility programs include copying files from one disk to another, file maintenance, sorting records, merging files, printing the memory contents, file manipulation, virus scanner and remover.


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