Introduction to Windows (Operating System)


Good Morning boys.
The Topic of discussion today is 
                      "Operating system- Facts and Types"
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The Google Meeting ID for today's class is:
meet.google.com/qik-uday-pqh

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Operating System is

  • the most important type of System Software
  • acts as an interface between user and hardware resources of a computer
  • is incharge of controlling all important components of a computer system
Four important components of a computer system are :-
  1. Hardware :
  • those components that can be seen and touched 
  • example - memory, monitor, keyboard and CPU
      2. Operating System : 
  • type of system software
  • controls and coordinates the use of hardware resources of a computer system
  • example - windows, linux, macintosh, BOSS
      3. Application Programs :
  • refers to the programs developed to solve the computing problems of the users
  • example - microsoft word, microsoft powerpoint, microsoft paint
      4. User :
  • person who uses the application software installed on the system
  • also known as "Liveware" or "Humanware"
  • interacts with the operating system through Character User Interface (CUI) or Graphical User Interface (GUI)
Need for an Operating System :-
  • Recognizes the input entered by the user (such as a key press or a mouse click)
  • Displays the generated output on the computer screen
  • Keeps a record of the files and directories on the hard disk
  • Manages the various peripheral devices of the computer (such as printers and scanners)

Types of Operating System

User Interface : 
  • User Interface comprises of everything the user can use to interact with the computer.
  •  It is basically the means by which the user and computer system can interact using input and output devices.
  • GUI and CUI are two types of User Interfaces. 
  • GUI stands for Graphical User Interface while CUI stands for Character User Interface.


GUI: GUI stands for Graphical User Interface. 
  • This is a type of user interface where user interacts with the computer using graphics. 
  • Graphics include icons, navigation bars, images etc.
  •  Mouse can be used while using this interface to interact with the graphics. 
  • It is a very user-friendly interface and requires no expertise. Eg: Windows has GUI.

CUI: CUI stands for Character User Interface. 
  • This is a type of user interface where user interacts with computer using only keyboard. 
  • To perform any action a command is required. 
  • CUI  was used in most primitive computers. 
  • Most modern computers use GUI and not CUI.
  •  Eg: MS-DOS has CUI.

Difference between GUI and CUI:
PROPERTYGUICUI
InteractionUsing graphics(images, icons)Using commands(only text)
NavigationEasierDifficult
Peripherals usedKeyboard and mouse(or any pointing device)Keyboard only
PrecisionLOWHIGH
SpeedLOWHIGH
Ease of OperationEasierDifficult, requires expertise
Memory RequiredHIGHLOW
FlexibilityMORE FlexibleLESS Flexible
Customising AppearanceHighly customisableAppearance cannot be changed

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