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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Your Company Name Budget Proposal for [enter years here] BUSN-278 [Term] Professor[name] DeVry University Table of Contents Section Title Subsection Title Page Number 1.0 Executive Summary 2.0 Sales Forecast 2.1 Sales Forecast 2.2 Methods and Assumptions 3.0 Capital Expenditure Budget 4.0 Investment Analysis 4.1 Cash Flows 4.2 NPV Analysis 4.3 Rate of Return Calculations 4.4 Payback Period Calculations 5.0 Pro Forma Financial Statements 5.1 Pro Forma
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go to this address to get the tutorial: CMGT 410 Week 1 Individual Assignment Project Proposal General Questions - General General Questions Consider the following scenario: You have been hired by a large company with branch offices around the country to assist with rollout of a new companywide compliance system. While initially the focus was on implementation of the technology‚ it was found that success will require at least 10 hours of training for all managers across the country
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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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Project Proposal on Payroll System Submitted by: Aporto‚ Zaldy Cabaya‚ Miafie T. Dablo‚ Maricel G. Nacional‚ Christian Paul System Analysis and Design (IS-206) Submitted to: Mrs. Jennifer Ledesma-Pido Date Submitted: January 07‚ 2013 Statement of the Problem The purpose of this study is to design and implement a payroll system that should accept employee hours‚ worked‚ compute net pay and record all the payroll data for succeeding processing. To accomplish these tasks‚
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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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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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CS 2203: Operating Systems Centre for Advance Studies in Engineering (CASE) Hand-out 8: Lab 08 Instructions March 2014 Computer Science Department Instructor: Shehreyar Rashid Lab 8: Introduction to Java and Sockets Objectives Write‚ compile‚ and execute Java programs in Linux using command line. Use an IDE to write‚ compile‚ and execute Java programs in Linux. Learn to write client-server application using Sockets. Credits: This lab uses material from Silberschatz‚ Galvin
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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 sharing
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INTRODUCTION Operating system (OS) is a set of programs that acts as an interface between user and computer hardware. It also manages the internal resources of a computer like control Unit‚ arithmetic logic unit‚ memory unit‚ I/O unit etc. simply we can say that operating system (OS) is a communication channel between the user and the computer machine. It is must for any computer system because the OS is only: The one program that runs at all the times on the computer. The program that
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