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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requests: 4‚ 40‚ 11‚ 35‚ 7‚ and 14 Using the LOOK policy All request are present in the wait queue Ignore rotational time and transfer time; just consider seek time 1. How does the result compare with Fig. 7.16? START FINISH TRAVELED 5 10 15 20 25 30 35 40 15 14 1 X
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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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are not needed if the business plans to continue operating in the future and issue financial statements each year. 9. The dividends account is closed to the Income Summary account in order to properly determine net income (or loss) for the period. 10. After closing entries have been journalized and posted‚ all temporary accounts in the ledger should have zero balances. 11. Closing revenue and expense accounts to the Income Summary account is an optional bookkeeping procedure
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CS 3530 Operating Systems L02 OS Intro Part 1 Dr. Ken Hoganson Chapter 1 Basic Concepts of Operating Systems Computer Systems A computer system consists of two basic types of components: • Hardware components‚ which are the electronic devices and electromechanical devices‚ such as the processors‚ memory modules‚ disk units‚ keyboard‚ screen‚ and other devices. • Software components‚ such as the application programs‚ operating system‚ utilities‚ and other programs. 3 Computer Architecture
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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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oyment incomeEMPLOYMENT INCOME Source of Employment Income The basis of taxation on employment income is that income from exercising an employment in Malaysia is regarded as Malaysian derived income. All income attributable to the employment exercised in Malaysia is subject to Malaysian tax irrespective of where the remuneration is paid. Where an employee is required to perform his duties outside Malaysia‚ the entire remuneration is still chargeable to Malaysian tax if the services rendered outside
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Evidence from Europe‚ Journal of Air Transport management‚ Vol. 23‚ pp. 54-58. Martinez-Garcia‚ E.‚ Rerrer-Rosell‚ B.‚ Coenders‚ G.‚ 2012. Profile of business and leisure travelers on low cost carriers in Europe‚ Journal of Air Transport Management 20‚ pp. 12-14. Mason‚ K.J.‚ Alamdari‚ F.‚ 2007. EU Network Carriers‚ Low Cost Carriers and Consumers Behaviour: a Delphi Study of Future Trends‚ Journal of Air Transport Management‚ 11(1)‚ pp.19-25. Mikulic‚ J.‚ Prebezac‚ D.‚ 2011. What drives passenger
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AGRICULTURAL INCOME What is agricultural Income Section 2(1A) (a) any rent or revenue derived from land which is situated in India and is used for agricultural purposes; (b). any income derived from such land by agricultural or by the process employed to render the produce fit for market or by sale of such produce by a cultivator or receiver of rent-in-kind; (c). any income derived from a building provided following conditions are satisfied: - (i). The building is situated on or immediate
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COMPARISO BETWEEN DIFFERENT TYPES OF OPERATING SYSTEMS These tables provide a comparison of operating systems‚ listing general and technical information for a number of widely used and currently available PC and handheld (including smartphone and tablet computer) operating systems. The article‚ usage share of operating systems provides a broader‚ and more general‚ comparison of operating systems that includes servers‚ mainframes and supercomputers. Because of the large number and variety of
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