Division of Computer System

Division of Computer System
         Computer system have two major divisions:-
Computer Hardware
Computer Software
Computer Hardware:-
     Computer Hardware are the physical components which are installed in a computer box as well as the devices connected with it such as key board, monitor, mouse etc. or The physical parts of the computer system that you can touch and feel are known as Computer Hardware. In a broader sense a computer can be divided into following hardware units:
Input Unit
      Input unit of a computer system consists of input devices.Due to the diverse nature of the data, variety of input devices exist to input data in different forms e.g. keyboard is used to enter textual data, mouse is used as a pointing device and to trigger different commands in different applications.
Output Unit
     Output unit of a computer system consists of output devices.As data presented to the user can take variety of forms, therefore different output devices are needed e.g. monitor is used to display text and images on a screen, printer is used to get output on paper.
System Unit
     System unit contains a number of other components which are enclosed in a rectangular casing.The casing is available in two different shapes i.e. vertical shape (called tower casing) and horizontal shape (called desktop casing). The most important component of system  unit is a rigid rectangular circuit board called mother board.
Computer Software:-
     Computer Software is a term used for organised collections of computer data and instructions  or Computer software is the know-how techniques in the form of a set of instructions that tells the computer what to do and how.
      Computer  software can further be divided into:-
System Software
      System software refers to the programs that are responsible for controlling and managing the actual operations of the computer hardware.
 2.  Application Software
     Application Software is used to accomplish tasks specified by the user.