g-types of software

7/28/2019 G-Types of Software

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Types of Software

Mah-Rukh Fida

Shaheed Benazir Bhutto Women University, Peshawar, Pakistan


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Detailed instructions to control

computer operation

Program:set of instructions

to the computer Languages

4 Generation

High-level (C,C++,Java)

Assembly

Machine

Stored:program must be in

primary storage

Software


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Software Types

System Software

Application Software


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System Software

Manages Computer Resources

Operating System Windows Vista/ XP/7/8

Window95/98/2000

Mac OS

Unix and DOS

Utility Programs Language Processors

Assembler

Interpreter

Compiler


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Operating System

Nucleus of all software activity

The most important program that runs on a computer.


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Operating System Continued

Basic tasks of operating system

recognizing input from the keyboard

sending output to the display screen

keeping track of files and directories on the disk

controlling peripheral devices such as disk drives and

printers.


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Operating System Continued

It is the first program loaded into memory when the computer is

turned on and, in a sense, brings life to the computer hardware.

Without it, you cannot use your word processing software,

spreadsheet software, or any other applications.

Without an operating system, you cannot communicate with your

computer. When you give the computer a command, the operating

system relays the instructions to the 'brain' of the computer, called the

microprocessor or CPU. You cannot speak directly to the CPU

because it only understands machine language. When you areworking in an application software program, such as Microsoft Word,

commands that you give the application are sent through the

operating system to the CPU.


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Utility Programs

A program that performs a specific task related to the

management of computer functions, resources, or files, as

password protection, memory management, virus protection,

and file compression.


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Utility Programs Continued

Anti-Virus: Scans computer for viruses

File archiver: It combines a number

of files together into one archive file, or a

series of archive files, for easier transportationor storage.

Backup: can make copies of all information

stored on a disk and restore either the entire

disk (e.g. in an event of disk failures)orselected files (e.g. in an event of accidental

deletion).


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Clipboard managers It helps

OS to cut, copy, paste items

and store their record forefficient future use.

Cryptographic utilities encrypt

and decrypt streams and files.

Data compression utilitiesoutput a shorter stream or a

smaller file when provided with a

stream or file.


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Disk cleaners can find files that are

unnecessary to computer operation, or

take up considerable amounts of space.

Disk cleaner helps the user to decidewhat to delete when their hard disk is

full.

Disk compression: transparently

compress/uncompress the contents of adisk, increasing the capacity of the disk.


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Disk defragmenters can

detect computer files whose contents

are broken across several locations

on the hard disk, and move thefragments to one location to increase

efficiency.

Disk partitions can divide an

individual drive into multiple logicaldrives, each with its own file system

which can be mounted by the

operating system and treated as an

individual drive.


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Memory testers check for memory failures.

Network utilities analyze the computer's

network connectivity, configure network settings,

check data transfer or log events.

Screensavers were desired to prevent phosphor

burn-in on CRT and plasma computer

monitors by blanking the screen or filling it with

moving images or patterns when the computer is

not in use. Contemporary screensavers are used

primarily for entertainment or security.

System monitors for monitoring resources and

performance in a computer system.


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Language ProcessorsProcesses a program written in Programming language (source code)

A translator: Translates source code into

machine, assembly or any other language

Assembler: Translates assembly language into

machine language.

Compiler: Translates high level language into

machine language.

Interpreter: Explicitly execute stored precompiled

code made by a compiler which is part of the

interpreter system


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Language ProcessorContinued . . .Compiler and Interpreter


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Application SoftwareSpecific Business Application

System software serves application

software which in turn serves the user.


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Application Software Continued

Enterprise Software: Used in organizations

Online shopping

Online payment process

Interactive product catalogue Automated billing system

Accounting Software: Records and processes

accounting transactions

Accounts payable Accounts receivable

Payroll

balance


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Office Suits: For knowledge workers

Word processor

Spreadsheet Presentation program

Database


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Graphics, animation software:

IrfanView, Paint, Flash


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Media Player: For playing multimedia files

VLC Player, Storm Codec Player etc


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References

www.en.wikipedia.org
http://www.en.wikipedia.org/http://www.en.wikipedia.org/

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