Computer Software

  A set of programs that causes the Hardware to do some work...2 types of

Software

           APPLICATION SOFTWARE             SYSTEM SOFTWARE

 

1.  APPLICATION SOFTWARE:

Application software solves special problems and does not directly interact

with Hard Ware. Are of 2 typesà

APP PACKAGES:

            The general software in market developed by famous companies... e.g,

            WORD PROCESSER>>> Wordstar, Word Perfect, MS Word, MS Work...

            SPREADSHEET>>> Lotus, Excel...

            DATABASE>>> Dbase, Fox Pro...

            GRAPHICS>>> Instant Artist, Coral Draw...

            GAMES>>> Dave, NFS,Vcop...

            EDUCATIONAL>>> Peach Tree, Quick Book, MOB...

            COSTOMIZED PACKAGES:

            The Soft Ware developed according to the need of a special organization.

Expensive and take time to build...

2.  SYSTEM SOFTWARE:

            System Software directly interacts with Hardware...are of 2 types

OPERATING SYSTEM:

            Controls the allocation and usage of Hardware resources and provide a

 communication between user and Hardware. The main function is to Run the

 program/request of user...

 

TRANSLATOR:

            Translator translate the source program into object program, it have three

main types,

            ASSEMBLER COMPILER    INTERPRETOR

 

o       ASSEMBLER:

            They convert an Assembly language program into machine language...

o       COMPILER:

They convert High language program into machine language and save the

object code for the future...

o       INTERPRETER:

            It converts High language program 1 by 1 into object code and does not save it...

 

TYPES OF SOFTWARE on basis of license:

       

v     PROPERITY:

            Cost to get license to use for WIN...

v     FREEWARE:

            Free to use but Copyrighted... e.g., IE

v     PUBLIC DOMIN:

            Free, Not Copyrighted...

v     SHAREWARE:

Free to try for some days and then it will stop working unless registered... e.g., WINZIP...

v     TRAILWARE:

            Use for some time then it will destroy...

v     OPEN SOURCE:

            You are allowed to change the source of the soft ware... e.g., LINUX Os...

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