Operating system ppt

Operating system ppt

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  www.oeclib.in Submitted To: SubmittedBy: www.studymafia.org www.studymafia.org Seminar On Operating System
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  Content  Introduction  History What is Operating System  Types  Special Features of OS  Functions  Advantages  Disadvantages  Conclusion
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  Introduction  An operatingsystem is an integrated set of programs that is used to manage the various resources and overall operations of a computer system.  It is designed to support the activities of a computer installation.  Thus, like a manager of a company, an operating system is responsible for the smooth and efficient operation of the entire computer system.
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  History  The 1940's- First Generations The earliest electronic digital computers had no operating systems.  The 1950's - Second Generation The General Motors Research Laboratories implemented the first operating systems in early 1950's for their IBM 701.
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  History…..  The 1960's- Third Generation  The systems of the 1960's were also batch processing systems,but they were able to take better advantage of the computer's resources by running several jobs at once.
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  What is anOperating System?  An Operating System, or OS, is low-level software that enables a user and higher-level application software to interact with a computer’s hardware and the data and other programs stored on the computer.  An OS performs basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as printers.
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  Operating System
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  Types of OperatingSystem  Batch Processing  Real-time operating systems  Time Sharing  Single-User,Single task
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  Batch Processing  Jobstogether with input data are fed into the system in a Batch  The job are then one after another  No job can be started until previous job is competed
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  Real-time operating systems Real-time operating systems are used to control machinery, scientific instruments and industrial systems.
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  Time Sharing
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  Single-user, single task
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  Special features ofOS  Multi Tasking  Multi programming  Parallel précising  Buffering  Spoofing
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  Functions….  Automatic transitionfrom job to job as directed by special control statements.  Maintenance of internal time clock and log of system usage foe all users.  Facilities easy communication between the computer system and computer operator.
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  Functions  Processor managementi.e. assignment of processors to different tasks being performed by the computer system.  Memory management, that is, allocation of main memory and other storage areas to the system programs as well as user programs and data.
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  Advantages  It enablesusers to run their own computer without any knowledge of coding.  It consists of programs and data that runs on computers, managing computer hardware resources and providing services for various application software.
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  Disadvantages  If anyproblems affected in OS, you may lose all the contents which have been stored already  Unwanted user can use your own system
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  CONCLUSION  Operating Systemperforms a wide variety of jobs.  The functions of operating system are transparent to the user.  This shows that operating system is very important part of computer.
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  Refference  www.google.org  www.oeclib.in www.wikipedia.com