What is the need of Operating System in a Computer? Explain the facilities provided by an operating system to its users. Also explain the services that are offered by the Operating System Ans: An operating system is an essential software component of a computer system. The basic objectives of an operating system are to make the computer system convenient to use and to utilize computer hardware in an efficient manner. We can define an operating system as a large collection of software‚ which manages
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Software Systems CA History and development of Operating Systems Table of contents Page 1 : Contents Page 2 : Introduction Page 2-3 : History of Operating Systems Page 3 : Timesharing and Multiprogramming 1960s Page 4 : The personal computer era Page 4-5 : The Significant types of Operating Systems Page 5-6 : The Functions of Operating Systems Page 7 : Why OS is so critical Page 7 : Conclusion Page 8 : Bibliography Introduction "Operating Systems have earned the reputation for being the
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Process | Arrival Time | Burst time | Priority | P1 | 0 | 3 | 3 | P2 | 1 | 6 | 1 | P3 | 3 | 9 | 3 | P4 | 6 | 1 | 2 | P5 | 10 | 6 | 4 | P6 | 15 | 7 | 2 | For Shortest-Job-First without preemption: (ignore the priority column‚ given above‚ for this one‚ priority is used in the non-preemptive priority algorithm) Check the arrival times. P1 arrives at time = 0‚ and its burst time is time = 3‚ so P1 will complete its execution at time = 3‚ because it starts at time = 0 and its burst time
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1. (Chapters 1‚ 2 and 3) For Alex Rogo‚ Lou and Bob Donovan. What performance measures are important to each of them? How about Bill Peach? Alex Rogo：His performance measure is the efficiency. That is to complete the order at a relatively lower cost and increase the economy scale. Alex said‚ “We can’t just dedicate the entire plant to one order at a time. The economies of scale would disappear. Our costs would go well‚ they’d be even worse than they are now. We can’t run the plant just by the
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devised by humans can inevitably be broken by a human‚ and the more complex the scheme‚ the more difficult it is to feel confident of its correct implementation. 1.2 The issue of resource utilization shows up in different forms in different types of operating systems. List what resources must be managed carefully in the following settings: a. Mainframe or minicomputer systems b. Workstations connected to servers c. Handheld computers Answer: a. Mainframes: memory and CPU resources‚ storage‚ network bandwidth
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This document consists of 9 printed pages and 3 blank pages. SPA (NF/CGW) T30933/8 © UCLES 2007 [Turn over om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Advanced Subsidiary Level and Advanced Level 2 1 The hydroxides of Group I metals (LiOH‚ NaOH‚ KOH‚ RbOH‚ CsOH) are highly corrosive white solids which rapidly absorb water vapour on exposure to the atmosphere. All of these solids dissolve exothermically in water. The enthalpy
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EXTERNAL ANALYSIS FOR BEST BUY CO. INC. Introduction Best Buy Co.‚ Inc. is a public limited company whose stocks are listed in the New York stock exchange. It is a specialty retailer of consumer electronics in United States which accounts for about twenty percent of domestic market retail business in technology based items. It has store in 24 different locations in United States (USSEC‚ 2011). Apart from its operations in USA‚ it also carries out its operations in Mexico‚ Turkey and United
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approach implicitly assumes that all costs are strictly variable; only variable costs should be constant on a per unit basis. The average fixed cost should decrease as the level of activity increases and should increase as the level of activity decreases. In this case‚ the actual level of activity was greater than the budgeted level of activity. As a consequence‚ the average cost per unit for any cost that is fixed or mixed (such as office expenses‚ equipment depreciation‚ rent‚ and insurance) should
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Introduction about Linux Linux is an operating system that was initially created as a hobby by a young student‚ Linus Torvalds‚ at the University of Helsinki in Finland. Linus had an interest in Minix‚ a small UNIX system‚ and decided to develop a system that exceeded the Minix standards. He began his work in 1991 when he released version 0.02 and worked steadily until 1994 when version 1.0 of the Linux Kernel was released. Linux is developed and released under the GNU General Public License and
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CCM4320 Network Systems and Services Comparison between the Network Operating systems Like Linux‚ Windows 2000 and Distributed operating system Amoeba. Group Members : Yedukondalu Madhumanchi (M00295179) Saroop kumar reddy Chidirala(M00333357) Date of Submission : 25-Feb-2011 Campus : Hendon School of Computing Science Dr G E Mapp Middlesex University List of Contents
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