computer software introduction_tutorial 1

8/2/2019 Computer Software Introduction_Tutorial 1

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Apply the principles of designing safeguards forcomputer information systems

Unit standard6758

Level 6 Credits7


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1. What is a software?

2. What is an Application software?

3. What is a System Software?

4. What is a Network ?

5. What is an End user ?(human resources)

6. What is physical environment?

7. What is multi-user software ?8. What is an a local area network ?

9. What is an Networked application software ?


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y How to Classify a computer?


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q

SoftwareHardware


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Hardware

physical parts of your computer which you canphysically touch or see such as your monitor,case, disk etc.

Parts of the computer you can see

Computer hardware, being part of a machine, canonly understand two basic concepts: on and off.The on and off concept is called binary.

Some Examples :


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Computer Hardware


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Software Computer Software are set of instructions that tell the

computer what to do.

Software is written in a computer language (such asBasic, C, Java, or others) by programmers.

Before processing a specific job, the computerprogram corresponding to that job must be stored inmemory.

Once the program is stored in memory the compute

can start the operation by executing the programinstructions one after the other

Compiling is the process of changing the textualwritten language into a binary language which can be

understood by the computer.


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ANALOGYIf you were to think of acomputer as a living being

hardware :would be the body

that does things like seeing with

eyes, lifting objects, and filling the

lungs with air.Software :

would be the intelligence,

interpreting the images that come

through the eyes, telling the arms how to lift objects

forcing the body to fill the lungs

with air.


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Computer Software

Computer software was developed in order to tellthe computer hardware what to do or How to do.

Computer software is the key to productive use ofcomputers.

Software can be categorized into two types:

system software Application software.


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Application Software Application Software consists of programs that

tell a computer how to produce information. Someof the more commonly used packages are:

Word processing

Electronic spreadsheet

Database

Presentation graphics


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Word Processing Word Processing software is used to create and

print documents. A key advantage of wordprocessing software is that users easily can makechanges in documents.


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Electronic Spreadsheets

Electronic spreadsheet software allows the userto add, subtract, and perform user-definedcalculations on rows and columns of numbers.These numbers can be changed and thespreadsheet quickly recalculates the newresults.


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Database Software

Allows the user to enter, retrieve, and updatedata in an organized and efficient manner,with flexible inquiry and reporting capabilities.


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Application Software

Application software

Special Purpose application

software

General purpose applicationsoftware


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General purpose application software

This type of software is developed keeping in mindthe general requirements for carrying out a specifictask. Many users can use it simultaneously as it fulfilsthe general requirements.

General Purpose Application Software is likely to beused by a wide range of users to develop

their own applications.

For example,:

a spreadsheet program is a general purposeapplication. It does spreadsheets, but those could bespreadsheets that you use to balance yourcheckbook, or manage your fantasy football league.


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Special purpose software Special purpose software which performs a particularbusiness/scientific/industrial task.

e,g, Retail purchasing software which accepts

customer orders, produces an invoice and possibly a

packing/delivery note sent directlyto the warehouseautomatically.

Special purpose application software is more limited inwhat it will do, but it usually goes that one thing muchbetter than a general purpose program.

For example, TurboTax (a tab preparation package) is aspecial purpose application. Sure, it adds and subtractsnumbers like a spreadsheet, but you can't use it to trackyour fantasy football league. It does one thing - prepare tax

returns.


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System Software provide a platform for running application software System software refers to the files and programs that make up

your computer's operating system

The programs that are part of the system software includeassemblers, compilers, file management tools, system utilites,and debuggers.

System files include libraries of functions, system services,drivers for printers and other hardware, system preferences, andother configuration files.

The system software is installed on your computer when youinstall your operating system.

Since system software runs at the most basic level of yourcomputer, it is called "low-level" software.

System softwareis a program that manages and supports thecomputer resources and operations of a computer system whileit executes various tasks such as processing data andinformation, controlling hardware components, and allowingusers to use application software. That is, systems software

functions as a bridgebetween computer system hardware andthe application software.
http://en.wikipedia.org/wiki/Application_softwarehttp://www.techterms.com/definition/operating_systemhttp://www.techterms.com/definition/debuggerhttp://www.techterms.com/definition/debuggerhttp://www.techterms.com/definition/operating_systemhttp://en.wikipedia.org/wiki/Application_software


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System software Vs Application

Software


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Useful links Netware proxy:

http://www.youtube.com/watch?v=nBZ--2eZvds
http://www.youtube.com/watch?v=nBZ--2eZvdshttp://www.youtube.com/watch?v=nBZ--2eZvdshttp://www.youtube.com/watch?v=nBZ--2eZvdshttp://www.youtube.com/watch?v=nBZ--2eZvdshttp://www.youtube.com/watch?v=nBZ--2eZvdshttp://www.youtube.com/watch?v=nBZ--2eZvds

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