operating system                OPERATING  SYSTEMS

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         OPERATING 
      SYSTEMS..


                      Presented by,
                      R.Mujeebabeham
                      Final year,CSE.



                        
    SEQUENCE:


    UNDERSTANDING OPERATING SYSTEMS


    HISTORY


    SALIENT FEATURES COMPARISON


    ADVADAGES AND DISADVANDAGES


                      
    I.UNDERSTANDING OPERATING SYSTEMS

    1.what is o/s?

        Set of programs containing
    instructions that work together to
    coordinate all the activities among
    computer hardware resources.

        The interface between the user and
    the computer hardware.

                          
    2.COMPUTER HIERARCHY:




       User      Applicati   Operatin
                   on        g system




                         
    3.OPERATIONAL INTERACTION




                         O/S




                          
     4.TYPES OF O/S:


    •Real-time operating system (RTOS)
    •Single-user, single-tasking

    •Single-user, multi-tasking

    •Multi-user, multi-tasking



                          
          II.HISTORY

          1.Time Line chart



                                              Windows 
                       Mac OS                    7
                        10.5

200              200          200       200              201   201
 6                7            8         9                0     4


      Windows      Windows                      Kubunt
       Vista        server                        u
                                     
                     2008
    2.Most Common Operating Systems



                                      LINUX




                       MAC




                        
    III.SALIENT FEATURES COMPARISON

    1.VIRUSES


      Operating     Number of
      System        Viruses
      windows       60,000

      Mac           70

      Linux         40

                      
    2.LINES OF CODE:


      Operating        Lines of Code
      System
      Windows          89 million

      Mac              50 Million

      Linux            40 Million


                        
    IV.ADVANTAGES AND DISADVANDAGES 

    1.Windows                     Easy to use
                                                Advandages:


                Familiar                                 Update




                                  WINDOWS




                     Gaming                        Supporting

                               
    Windows                  Disadvandages
                 Expensive




                 WINDOWS




    Not stable                    Not secure



                     
MAC                               Advantages
                     Great GuI




      secure                            stable




                      MAC




                  Better to 
               Graphic Designer
                  
MAC                 Platform        Disadvantages
                   Depentent




    Difficult                       Not All S/W
    Mouse                              Run



                     MAC




                  No Gaming 

                                 
Linux                                 Advantages

                              Free




         Low PC 
                                                Stable
        Requirement




                              Linux




            Source code                     Secure
                           
    Linux                     Disadvandages
                    Not all
                   S/W Run




                    Linux




                                  Hard to learn,
     Not Support
                                  Use & install 


                       
Operating System Evolution

•50s main frame era

    60s microprocessor

    80s game consoles

    90s Personal Computers

    2010 open source mobile OS

    2020 online OS


                          
    THANK YOU...


           

				
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