Describe types and components of computer systems.

  • Types of computer system.
  • The hardware.
  • The operating sytem.
  • The utilities.
  • The application programs.
  • End users
Utilities are the small programs that provide an addition to the capabilities provided by an operating system. Generally utilities perform a specific task related to managing the system resources. Operating systems contain a number of utilities for managing disk drives, printers, and other devices. Utilities are installed as memory resident programs that assist in system management. These utilities are essential and critical to modern computer environments. They perform the important tasks such as disk optimization and anti-virus protection. Most system utilities are installed, configured and periodically updated for a specific computer configuration.
Application programs are the computer programs which are used for the purpose of performing specific tasks using a computer. Application programs define the ways in which the system resources are used to solve the computing problems of the users. Examples of the application programs include word processors, accounting packages, interpreters, web browsers, computer games, database systems, business oriented software etc. 
End users interact with the computer system to get response of their inputs. There are different types of users who interact with the computer system; these are programmers, native users and the database administrators. The term 'end user' usually implies an individual with a relatively low level of computer expertise. Unless you are a programmer or engineer, you are almost an end user. 
System softwares System software is usually the low level software required to manage computer resources and to support the execution of application programs. Whereas application software is software that performs specific functions needed directly by the end users.

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