types of software
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Types of Software
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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
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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
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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
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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
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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
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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
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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
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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
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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
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• 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
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Advantage of using Ready-Made Packages
• User-friendly
• Cheap
• Easily Available
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Disadvantages of using Ready-Made Packages
• Rigid
• Functions cannot be changed
• Some may not suit own specific requirement
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