Operating System UNIT - 1 Roadmap • What is an Operating System? • • • • • • • • Operating System Objectives/Functions The Evolution of Operating Systems Major Achievements Structuring methods Design of API’s Interrupts Device Organization User/System state Transition What is an Operating System? • A program that acts as an intermediary between a user of a computer and the computer hardware. OR • A program that controls the execution of application programs. • Kernel – the one program
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Hotel/Motel Market Analysis Developing a business plan for an existing business or conducting a feasibility study for a new venture requires a thorough analysis of market conditions. Market conditions in your area have a significant impact on the profitability of your hotel or motel. The strength of the local lodging market affects how many rooms you can sell and the rates that you can charge. This guidebook will help you analyze your market so that you can gauge the potential of your operation
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throughout its lifetime. Operating system takes care of selecting the processes from these queues in some fashion. Selecting process is done by the the appropriate scheduler. Types of scheduling: Short - term (or) CPU Scheduler Medium – term Long – term (or) Job Scheduler Short – Term Scheduler: Short term scheduler selects the processes that are ready to execute and allocates CPU to one of them. Medium – Term Scheduler: Medium term scheduler is introduced by some operating systems such as time
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Operating leverage Def. of leverage - The degree to which an investor or business is utilizing borrowed money. Companies that are highly leveraged may be at risk of bankruptcy if they are unable to make payments on their debt; they may also be unable to find new lenders in the future. Leverage is not always bad‚ however; it can increase the shareholders’ return on investment and often there are tax advantages associated with borrowing. Def of operating leverage- a measurement of the degree to
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To my children‚ Lemar‚ Sivan‚ and Aaron and my Nicolette Avi Silberschatz To my wife‚ Carla‚ and my children‚ Gwen‚ Owen‚ and Maddie Peter Baer Galvin To my wife‚ Pat‚ and our sons‚ Tom and Jay Greg Gagne Abraham Silberschatz is the Sidney J. Weinberg Professor & Chair of Computer Science at Yale University. Prior to joining Yale‚ he was the Vice President of the Information Sciences Research Center at Bell Laboratories. Prior to that‚ he held a chaired professorship in the Department of
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Operating system ABCs An operating system‚ or OS‚ is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system‚ a computer would be useless. Operating system types As computers have progressed and developed so have the operating systems. Below is a basic list of the different operating systems and a few examples of operating systems that fall into each of the categories. Many computer operating systems will
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OPERATING SYSTEM - FILE SYSTEM http://www.tutorialspoint.com/operating_system/os_file_system.htm Copyright © tutorialspoint.com File A file is a named collection of related information that is recorded on secondary storage such as magnetic disks‚ magnetic tapes and optical disks.In general‚ a file is a sequence of bits‚ bytes‚ lines or records whose meaning is defined by the files creator and user. File Structure File structure is a structure‚ which is according to a required format
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UUM COLLEGE OF ARTS AND SCIENCES UNIVERSITI UTARA MALAYSIA No. Information on Course 1. Course Name : OPERATING SYSTEM 2. Course Code: STIK2044 3. Name(s) of Academic Staff: HATIM MOHAMAD TAHIR ROOM: SOC3070 OFF:928 5193 EMAIL: HATIM@UUM.EDU.MY FB: HATIM 4. Rationale for the inclusion
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Operating Theatre Operating Theatre Introduction Surgical site infections (SSIs) are the second to third most common site of health care associated infections (HAIs). These complications of surgical procedures cause considerable morbidity and‚ when these occur deep at the site of the procedure‚ can carry mortality as high as 77%. As illustrated below there are several key steps or “chains” that have to be connected to result in infection. However‚ for SSIs‚ the initial introduction of microbial
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Chapter 2 – Operating System Overview TRUE/FALSE QUESTIONS: 1) An OS should be constructed in such a way as to permit the effective development‚ testing‚ and introduction of new system functions without interfering with service. (True) 2) The OS masks the details of the hardware from the programmer and provides the programmer with a convenient interface for using the system. (True) 3) The ABI gives a program access to the hardware resources and services available in a system through the user
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