Types of software
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Types of software






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Types of software Types of software Presentation Transcript

  • Types of Software
  • Introduction
    • Software is programs or instructions that tell the computer what to do and how to do it
    • Computers need software to do even a simple job, without software computers cannot function
  • Types of Software
    • Two types:
      • System software
        • It is the background software that enables the application software to interact with each other
      • Application software
        • It is a group of programs designed to accomplish a single task or a group of related tasks
  • System Software
    • Also known as Operating System (OS) and Disk Operating System (DOS)
    • OS allows applications software to communicate with the hardware
    • DOS is a group of programs which manages the most basic operations of a computer system
    • DOS is a link between the users and the computer system
    • Example of OS are Window XP, Window 7,VISTA, Linux, Macintosh, etc
    • DOS programs reside on a floppy disk or hard disk
  • Functions of OS
    • Control the hardware, the memory and the application software
    • Manages the information on the disk
    • Runs computer programs
    • Manages the startup process
  • Application Software
    • It is a group of programs designed to accomplish a single task or a group of related tasks
    • It divided into two categories:
      • User-designed application software
        • Software that is created or designed by big companies and government department
      • Ready-made application software
        • A collection of programs designed for general use
  • User Designed Application Software
    • Also known as Bespoke Software or Tailor-Made Software
    • These type of software are designed and developed specifically for the company or organization
  • Advantages
    • The Company will get the exact software/system that they need
    • The software will work exactly how they want it to work
    • The software will only have the features that they specifically need in their business
  • Disadvantages
    • Takes a long time to develop
    • Cost a great deal of money to develop such system
    • Company need to employ a team of people such as analysts, programmers
    • There will be little in the way of user support and online help
  • Ready-Made Designed Application Software
    • Also known as Package Software or Package
    • It usually comes with manuals
      • Manuals are instruction on how to run the application software
    • Example Word Processing, Power Point
    • Package is generally written in one of the programming language by a team of computer specialists.
    • These specialist is called programmers
    • A company or organization which writes packages is called a software house
    • A package is specific to an operating system
  • Advantage of using Ready-Made Packages
    • User-friendly
    • Cheap
    • Easily Available
  • Disadvantages of using Ready-Made Packages
    • Rigid
    • Functions cannot be changed
    • Some may not suit own specific requirement