Computer Software

_›Pertains to the non- physical components that make

    up a computer system.

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›_The term  software generally refers to all programs, procedures, and routines concerning the data processing system that make the computer work.



System Software

›-The user and the hardware communicate with each other through the system software.

›-It’s a collection of programs or routines which direct the internal processing performed by the computer

›-Generally supplied by computer manufactures to facilitate the efficient operation of the computer.

›-this software is responsible for supervising the activities of the CPU.

›Without OS a comp will not be able to perform any task as defined by any software.

  example:

  DOS(Disk Operating System)

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›Windows System

Linux

Programming  Language System

›a set of written symbols that instructs the computer hardware to perform the specified tasks.

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Translators

Interpreters

Compilers

Translators, Interpreters, Compilers

›Software which translate software languages into a machine language or computer language

Low- level programming

›use machine language, like assembly language.

High- level programming languages

›are those whose instruction closely resemble Human language and mathematical notations.

Application Software

›are programs written by the computer programmer to obtain solutions to a variety of problems. These programs are designed to satisfy a user’s specific needs.

2 Types of Application Software:

›Customized software- created or developed according to specific requirements or specifications  of a user to solve a particular problem.

Include programs to monitor collection and generate      payroll, inventory, and general ledger systems; enrolment and organized grading sys and other programmable situations.

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›Packaged software- are “ready-made” or pre- written programs of  common applications that can be readily used with minimal modifications, if indeed.

Examples:

›   Word Processors(Wordstar, Word Perfect, MS Word for Windows)

›  Spreadsheets(Lotus, Quattro, MS Excel)

›  Graphics Presentation(Harvard Graphics, MS PowerPoint)

›  Database Software(Dbase, FoxBase, FoxPro, FoxPlus)

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