Perfect Computer Notes

Topic: Explain Main Difference Between System Software and Application Software            Differentiate between system software and application software Before , explaining the main differences between application software and system software, let us know the definitions of Application software and System software with examples. What is System Software: System software is a set of programs to control all components of computer and to manage overall operations of computer system. Differences between System software and application software System software is used as a base to install and run all application software. Examples of system software include: Operating Systems, like Microsoft Windows, DOS, Unix and Linux Device Drivers like Device driver software of a Printer (found on CD normally provided with the printer) Utility Programs like AVAST anti virus, Disk Scanners and File Viewers etc. What is Application Software? Users can use Appli

  Q. Explain Customized software and Packaged software. a) Customized Software Customized software is a type of application software that is designed for a particular customer or organization. When packaged software does not fulfill needs of an organization then a programmer / software developer / software engineer is hired. The programmer will develop needed custom software for that organization according to the organizations specific needs and requirements. Student Information software developed for Govt. Post Graduate College of Commerce, Rahim Yar Khan is an example of customized software .  It will be used to store all related data about students, admissions and examinations etc. b) Packaged Software Packaged software is a type of application software that is developed for sale to the general public. It is also known as off-the-shelf software or Pre-Written software. It facilitates the people to perform day-to-day activities. Examples of packaged software are w

Q. Write notes on the following: WWW, ISP, WEB PAGE, WEB SITE, WEB SERVER, WEB BROWSER WWW WWW stands for World Wide Web. It is also called web. It is the collection of all connected web documents stored on different web servers. These documents contain information in the form of text, pictures, audio and video clips. WWW has many advantages: · finding a job · searching information · advertisement for business · weather forecast · entertainment · education Difference between Internet and World wide web: The main difference between internet and World Wide web is that World Wide Web is only a service provided by internet. It provides access to web documents. While internet provides many other services also like FTP, TELNET and chatting etc. ISP (Internet Service Provider) OR IAP (Internet Access Provider ISP stands for internet service provider. It is a company that provides internet connections to users. For example WOL net, PAK net, CYBER net etc. are ISPs. To connect to i