sys software

8/7/2019 sys software

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A set of instructions that tells the comcomputer whatto do.The term software refers to a set of instructionsthat tells the computer what to do. These instructionsets, also called programs, provide the means for us

to interact with and use the computerTwo main types of software

System software

Application software


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System Software

System software helps runthe computer andcoordinates instructuionsbetween applicationsoftware and thecomputers hardwaredevices

Coordinates instructionsbetween software andhardware

Includes

operating system

utility programs

Application software

programs used tocomplete tasks for a

user includes

1.productivity software2.specialty software3.entertainmentsoftware 4.educationaland referencesoftware


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Application software is a set of programs, whichare written to perform specific tasks of the users ofcomputers such as Accounts, Stores, Payroll, etc.

These softwares are developed in high levellanguge to help the user to get the computerperform the task.

These are 2 types

1.Customized packages

2.Genralized packages


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o Word-processingprograms.

o

Spread sheet programso Presentation programs

o Database programs

o Personal informationmanager programs


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Word processingcreate, edit, revise and print document

E.g: Microsft word, LotusWordPro and CorelW

ordperfect

Desktop Publishing

o produce printed materals that look

professionally published

o E.g., Adobe pageMaker, Microsoft publishedand quarkXPress


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An operating system (OS) is software, consisting ofprograms and data, that runs on computers andmanages computer hardware resources andprovides common services for efficient executionof various application software.


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What is Booting?

Process of starting or restarting a computer

cold boot Turning on computer that has been

powered off

Warm boot Restarting computer that is poweredon


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What messages display on the screen when you bootthe computer


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User interface

ResourceManagement

Utilitiesand otjerFunction

FileManagement

TaskManager


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WINDOWS

UNIXLINUX

MAC OS X


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Utility Programs

Utility programs help manage, maintain andcontrol computer resources. These programsare available to help you with the day-to-daychores associated with personal computing and

to keep your system running at peakperformance.

Some examples of utility programs include:

Virus scanning software

Backup software

Scandisk

Disk defragmenter


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What is a Disk Scanner?

Detects and corrects problems onhard disk or floppy disk

Search for and removes

unnecessary files

What is a backup utility?

Copies selected files or entire

hard disk onto another disk ortape

Compress files during backup torequire less storage space


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What is Disk defragmenter?

Reorganizes files and unused space on harddisk so programs run faster.


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What is Screen saver?

Causes monitors screen to display movingimages or blank screen if there is no activityfor a specified time.

To secure computer, user configures screensaver to require password to deactive


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What is virus?

Potentially damaging computer program

Affects computer without users knowledge

SIGNS OF VIRUS

INFECTION


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What is an antivirus program? Identifies and removes virus in memory,

storage media, and incoming files

Must be updated frequntly

sys software

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