Application Software

Software applications work through the operating system to gain access to the hardware.

There are two types of application software

* User Application Programs ( Specially written softwares)

These are custom-written by the user, or a software house under contract, to perform specific job.

*Application Packages (Generic Packages)

These are prewritten programs purchased 'off the shelf' by the user.

Advantages of applications packages:

• Save time, effort and expense of programming
• Tried and tested - good quality and 'error free'
• On-line help facilities for ease of use

Disadvantages of application packages:

• May not meet the special needs
  

- Packages are designed to meet the needs of different users and they may not be exactly suitable. However many packages can be modified or customized to meet special needs.

• Continuity of support and guarantee
  

- It is useful to have a programs maintenance agreement so that upgrades and later versions can be provided as well as help if things go wrong.

A software application carries out tasks that the user is interested in doing such as:

* Writing a letter
* Creating Graphs
* Sending an email
* Downloading a webpage

Application can be classified under three main categories:

* General purpose software
* Specialist software
* Tailor made/Bespoke Software