1.The four major functions of an operating system are: Managing programs Managing Memory Handling input and output User Interface Managing programs Managing programs is one of the functions that are most dramatic effect to the operating systems overall quality. There are many different systems that are used for managing programs. You have single tasking‚ in which you can run only one program application at a time. Multi-tasking in which in the normal operating system allows a single user to
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Lean Operations Lean is a philosophy of manufacturing that emphasizes the minimization of the amount of all resources (including time) used in operations of the company. Operations processes are considered to be Lean when they are very efficient and have few wasted resources. The elimination of WASTE is actually the defining principle of Lean. By eliminating waste of all sorts in the system‚ the lean approach lowers labour‚ materials‚ and energy costs of production. Lean also emphasizes building
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(2009) state that the concept of lean resource management was developed in the 1950s by the car manufacturing company Toyota. There are several aspects of lean resource management including the JIT or just in time system. Under such system‚ the inventory or raw materials that the company needs are ordered just in time to be used to the production process. According to Teresko (2007)‚ Toyota’s Production System is one that emphasizes the concept of lean manufacturing systems. Through such process‚ the unnecessary
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What trade-offs are involved in shifting from a traditional operations system to a lean system for: a. A manufacturing firm? A lean system is basically quality vs. quantity. Producing quality in the lean system eliminates waste. For instance‚ a lean system can reduce inventory‚ waiting time‚ excessive transportation‚ as well as defects in products and services. “The key considerations are the time and cost requirements for successful conversion‚ which can be substantial” (Stevenson‚ 2010‚ p.
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usually select computers that will run under Microsoft operating systems. A big part of businesses today use Microsoft as their primary operating system for their computers due to its reliability‚ customizability‚ and its broad use from other businesses. As a Chief Information Officer of a medium-sized information services company‚ my job is to consider our customers and companies perspective and their feelings in using a new operating system into our company. If our company is not up to date with
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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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publications and other professional conferences and journals. He is a coauthor of the textbook Database System Concepts. He has also written Op-Ed articles for the New York Times‚ the Boston Globe‚ and the Hartford Courant‚ among others. Peter Baer Galvin is the chief technologist for Corporate Technologies (www.cptech.com)‚ a computer facility reseller and integrator. Before that‚ Mr. Galvin was the systems manager for Brown University’s Computer Science Department. He is also Sun columnist for ;login:
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1. Computer System Components (i) Hardware Provides basic computing resources (CPU‚ memory‚ Input/output (I/O) devices). (ii) Operating System (OS) Controls and coordinates the use of the hardware among the various application programs for the various users. (iii) Applications Programs /Application Software Define the ways in which the system resources are used to solve the computing problems of the users (compilers‚ database systems‚ video games‚ business programs). (iv) Users
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threads. 2- On systems using either M: 1 or M: N mapping‚ user threads are scheduled by the thread library and the kernel schedules kernel threads. 3- Kernel threads need not be associated with a process whereas every user thread belongs to a process. Kernel threads are generally more expensive to maintain than user threads as they must be represented with a kernel data structure. 4.9) Can a multithreaded solution using multiple user-level threads achieve better performance on a multiprocessor
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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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