OPERATING SYSTEMS OVERVIEW
|
|
|
- Buddy Gaines
- 7 years ago
- Views:
Transcription
1 OPERATING SYSTEMS OVERVIEW
2 Contents O.S.Functions The Evolution of O.S. Characteristics of O.S. Basic hardware elements
3 Contents O.S.Components System calls O.S.Structure
4 USER 1 USER 2 USER 3 USER n compiler text editor interpreter database system operating system computer hardware
5 Programming system components compilers loader linker comand interpreter (shell)
6 O.S. purposes to make a computer more convenient and easier to use to allow more efficient operations of the whole computer system
7 To simplify the program development The O.S. masks the details of the hardware from the programmer and provides the programmer with a convenient interface for using system resources (system calls)
8 To simplify the program development Definition of an extended (virtual) machine
9 VIRTUAL MACHINE ES: DISK CONTROLLER
10 commands: read, write, head motion, ecc parameters: sector address, number of sectors for each track, ecc state and error conditions
11 Hardware resource allocation Access to system resources must be controlled and conflicts for resource contention resolved
12 Hardware resource allocation Any user should be provided with required resources, by following suitable policies
13 The details for the management of hardware resources must be hidden to users
14 System calls provide the interface between the application programs and the O.S.
15 THE EVOLUTION OF O.S.
16 Serial processing No O.S. Control by console Scheduling Setup time
17 Simple batch systems Monitor Resident in main memory Control of the program execution batch solution
18 Uniprogramming systems Only one program in main memory Machine time alternates between execution of user programs and monitor (OS)
19 Uniprogramming systems operating system user program main memory organization in a batch uni-programming system
20 Uniprogramming systems Hardware and software resources of the computer system are dedicated to only one program (monouser system)
21 Uniprogramming systems low CPU utilization CPU utilization I/O waiting t
22 Hardware characteristics Memory protection Timer Privileged instructions Interrupts
23 Spooling (simultaneous peripheral operation on-line) disk card reader CPU and memory printer
24 Multiprogrammed Batch Systems O.S. job 1 job 2 job 3 A multiprogramming system with three jobs in memory
25 Multiprogrammed Batch Systems Increase of resource utilization job 1 CPU utilization I/O waiting job 2 t
26 Multiprogrammed Systems O.S. are more sophisticated Algorithms for resource management (CPU, memory, I/O)
27 Multiprogrammed Systems O.S. are more sophisticated Protection of the environments of different jobs
28 Multiprogrammed Systems Scheduling algorithms Job mix CPU-bound job I/O-bound job
29 Multiprogrammed Batch Systems Example OS/36O working on IBM 36O e 37O series
30 Multiprogrammed Batch Systems High efficiency in resource utilization Users cannot directly interact with the O.S. Large response time
31 Interactive systems direct communication between the user and the system
32 Interactive systems the user gives instruction to the O.S. directly, by using either a keyboard or a mouse and waits for immediate results
33 Time-sharing systems Logical extension of multiprogramming Multiple users simultaneously access the system through terminals
34 Time-sharing systems Logical extension of multiprogramming The O.S. interleaves the execution of each user program in a short burst or quantum of computation
35 Time-sharing systems At the end of the quantum (or during the quantum, if the job executes an I/O instruction) the CPU is switched to a different job.
36 Time-sharing systems One of the first developed time sharing O.S. was the CTSS (Compatible Time Serie System), MIT years 6O MULTICS, UNIX,
37 Overhead job 1 CPU utilization I/O waiting overhead job 2 t
Chapter 2: OS Overview
Chapter 2: OS Overview CmSc 335 Operating Systems 1. Operating system objectives and functions Operating systems control and support the usage of computer systems. a. usage users of a computer system:
CS 3530 Operating Systems. L02 OS Intro Part 1 Dr. Ken Hoganson
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,
OPERATING SYSTEM OVERVIEW
M02_STAL6329_06_SE_C02.QXD 2/28/08 3:33 AM Page 50 CHAPTER OPERATING SYSTEM OVERVIEW 50 2.1 Operating System Objectives and Functions The Operating System as a User/Computer Interface The Operating System
OPERATING SYSTEM SERVICES
OPERATING SYSTEM SERVICES USER INTERFACE Command line interface(cli):uses text commands and a method for entering them Batch interface(bi):commands and directives to control those commands are entered
Components of a Computing System. What is an Operating System? Resources. Abstract Resources. Goals of an OS. System Software
What is an Operating System? An operating system (OS) is a collection of software that acts as an intermediary between users and the computer hardware One can view an OS as a manager of system resources
Introduction. What is an Operating System?
Introduction What is an Operating System? 1 What is an Operating System? 2 Why is an Operating System Needed? 3 How Did They Develop? Historical Approach Affect of Architecture 4 Efficient Utilization
Overview and History of Operating Systems
Overview and History of Operating Systems These are the notes for lecture 1. Please review the Syllabus notes before these. Overview / Historical Developments An Operating System... Sits between hardware
Contents. Chapter 1. Introduction
Contents 1. Introduction 2. Computer-System Structures 3. Operating-System Structures 4. Processes 5. Threads 6. CPU Scheduling 7. Process Synchronization 8. Deadlocks 9. Memory Management 10. Virtual
Chapter 3. Operating Systems
Christian Jacob Chapter 3 Operating Systems 3.1 Evolution of Operating Systems 3.2 Booting an Operating System 3.3 Operating System Architecture 3.4 References Chapter Overview Page 2 Chapter 3: Operating
Operating Systems 4 th Class
Operating Systems 4 th Class Lecture 1 Operating Systems Operating systems are essential part of any computer system. Therefore, a course in operating systems is an essential part of any computer science
Operating Systems OBJECTIVES 7.1 DEFINITION. Chapter 7. Note:
Chapter 7 OBJECTIVES Operating Systems Define the purpose and functions of an operating system. Understand the components of an operating system. Understand the concept of virtual memory. Understand the
Chapter 1: Introduction. What is an Operating System?
Chapter 1: Introduction What is an Operating System? Mainframe Systems Desktop Systems Multiprocessor Systems Distributed Systems Clustered System Real -Time Systems Handheld Systems Computing Environments
Types Of Operating Systems
Types Of Operating Systems Date 10/01/2004 1/24/2004 Operating Systems 1 Brief history of OS design In the beginning OSes were runtime libraries The OS was just code you linked with your program and loaded
Objectives. Chapter 2: Operating-System Structures. Operating System Services (Cont.) Operating System Services. Operating System Services (Cont.
Objectives To describe the services an operating system provides to users, processes, and other systems To discuss the various ways of structuring an operating system Chapter 2: Operating-System Structures
Chapter 3 Operating-System Structures
Contents 1. Introduction 2. Computer-System Structures 3. Operating-System Structures 4. Processes 5. Threads 6. CPU Scheduling 7. Process Synchronization 8. Deadlocks 9. Memory Management 10. Virtual
Operating System Structures
Operating System Structures Meelis ROOS mroos@ut.ee Institute of Computer Science Tartu University fall 2009 Literature A. S. Tanenbaum. Modern Operating Systems. 2nd ed. Prentice Hall. 2001. G. Nutt.
ELEC 377. Operating Systems. Week 1 Class 3
Operating Systems Week 1 Class 3 Last Class! Computer System Structure, Controllers! Interrupts & Traps! I/O structure and device queues.! Storage Structure & Caching! Hardware Protection! Dual Mode Operation
Chapter 2 System Structures
Chapter 2 System Structures Operating-System Structures Goals: Provide a way to understand an operating systems Services Interface System Components The type of system desired is the basis for choices
Chapter 3: Operating-System Structures. System Components Operating System Services System Calls System Programs System Structure Virtual Machines
Chapter 3: Operating-System Structures System Components Operating System Services System Calls System Programs System Structure Virtual Machines Operating System Concepts 3.1 Common System Components
System Structures. Services Interface Structure
System Structures Services Interface Structure Operating system services (1) Operating system services (2) Functions that are helpful to the user User interface Command line interpreter Batch interface
Components of a Computer System
SFWR ENG 3B04 Software Design III 1.1 3 Hardware Processor(s) Memory I/O devices Operating system Kernel System programs Components of a Computer System Application programs Users SFWR ENG 3B04 Software
Multiprogramming. IT 3123 Hardware and Software Concepts. Program Dispatching. Multiprogramming. Program Dispatching. Program Dispatching
IT 3123 Hardware and Software Concepts Operating Systems II October 26 Multiprogramming Two or more application programs in memory. Consider one CPU and more than one program. This can be generalized to
CS3600 SYSTEMS AND NETWORKS
CS3600 SYSTEMS AND NETWORKS NORTHEASTERN UNIVERSITY Lecture 2: Operating System Structures Prof. Alan Mislove (amislove@ccs.neu.edu) Operating System Services Operating systems provide an environment for
How To Understand The Principles Of Operating Systems
ICS 143 - Principles of Operating Systems Lecture 1 - Introduction and Overview MWF 11:00-11:50 a.m. Prof. Nalini Venkatasubramanian ( nalini@ics.uci.edu ) [lecture slides contains some content adapted
Operating system Dr. Shroouq J.
3 OPERATING SYSTEM STRUCTURES An operating system provides the environment within which programs are executed. The design of a new operating system is a major task. The goals of the system must be well
Chapter 3: Operating-System Structures. Common System Components
Chapter 3: Operating-System Structures System Components Operating System Services System Calls System Programs System Structure Virtual Machines System Design and Implementation System Generation 3.1
Operating System Tutorial
Operating System Tutorial OPERATING SYSTEM TUTORIAL Simply Easy Learning by tutorialspoint.com tutorialspoint.com i ABOUT THE TUTORIAL Operating System Tutorial An operating system (OS) is a collection
Outline: Operating Systems
Outline: Operating Systems What is an OS OS Functions Multitasking Virtual Memory File Systems Window systems PC Operating System Wars: Windows vs. Linux 1 Operating System provides a way to boot (start)
CHAPTER 15: Operating Systems: An Overview
CHAPTER 15: Operating Systems: An Overview The Architecture of Computer Hardware, Systems Software & Networking: An Information Technology Approach 4th Edition, Irv Englander John Wiley and Sons 2010 PowerPoint
Operating System Structures
COP 4610: Introduction to Operating Systems (Spring 2015) Operating System Structures Zhi Wang Florida State University Content Operating system services User interface System calls System programs Operating
Operating Systems: Basic Concepts and History
Introduction to Operating Systems Operating Systems: Basic Concepts and History An operating system is the interface between the user and the architecture. User Applications Operating System Hardware Virtual
Review from last time. CS 537 Lecture 3 OS Structure. OS structure. What you should learn from this lecture
Review from last time CS 537 Lecture 3 OS Structure What HW structures are used by the OS? What is a system call? Michael Swift Remzi Arpaci-Dussea, Michael Swift 1 Remzi Arpaci-Dussea, Michael Swift 2
System Virtual Machines
System Virtual Machines Introduction Key concepts Resource virtualization processors memory I/O devices Performance issues Applications 1 Introduction System virtual machine capable of supporting multiple
Lesson 06: Basics of Software Development (W02D2
Lesson 06: Basics of Software Development (W02D2) Balboa High School Michael Ferraro Lesson 06: Basics of Software Development (W02D2 Do Now 1. What is the main reason why flash
Overview of Operating Systems Instructor: Dr. Tongping Liu
Overview of Operating Systems Instructor: Dr. Tongping Liu Thank Dr. Dakai Zhu and Dr. Palden Lama for providing their slides. 1 Lecture Outline Operating System: what is it? Evolution of Computer Systems
CS 453/552: Operating Systems
CS 453/552: Operating Systems Introduction An Operating System is a system software that acts as an intermediary between user and resources (could be hardware or abstract) application software and resources
Example of Standard API
16 Example of Standard API System Call Implementation Typically, a number associated with each system call System call interface maintains a table indexed according to these numbers The system call interface
This tutorial will take you through step by step approach while learning Operating System concepts.
About the Tutorial An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. The operating system is a vital component
Virtualization. Pradipta De pradipta.de@sunykorea.ac.kr
Virtualization Pradipta De pradipta.de@sunykorea.ac.kr Today s Topic Virtualization Basics System Virtualization Techniques CSE506: Ext Filesystem 2 Virtualization? A virtual machine (VM) is an emulation
OPERATING SYSTEM INDEX
OPERATING SYSTEM INDEX LESSON 1: INTRODUCTION TO OPERATING SYSTEM LESSON 2: FILE SYSTEM I LESSON 3: FILE SYSTEM II LESSON 4: CPU SCHEDULING LESSON 5: MEMORY MANAGEMENT I LESSON 6: MEMORY MANAGEMENT II
Devices and Device Controllers
I/O 1 Devices and Device Controllers network interface graphics adapter secondary storage (disks, tape) and storage controllers serial (e.g., mouse, keyboard) sound co-processors... I/O 2 Bus Architecture
Lesson Objectives. To provide a grand tour of the major operating systems components To provide coverage of basic computer system organization
Lesson Objectives To provide a grand tour of the major operating systems components To provide coverage of basic computer system organization AE3B33OSD Lesson 1 / Page 2 What is an Operating System? A
How To Understand The History Of An Operating System
7 Operating Systems 7.1 Source: Foundations of Computer Science Cengage Learning Objectives After studying this chapter, the student should be able to: 7.2 Understand the role of the operating system.
CSE 120 Principles of Operating Systems. Modules, Interfaces, Structure
CSE 120 Principles of Operating Systems Fall 2000 Lecture 3: Operating System Modules, Interfaces, and Structure Geoffrey M. Voelker Modules, Interfaces, Structure We roughly defined an OS as the layer
Scheduling. Yücel Saygın. These slides are based on your text book and on the slides prepared by Andrew S. Tanenbaum
Scheduling Yücel Saygın These slides are based on your text book and on the slides prepared by Andrew S. Tanenbaum 1 Scheduling Introduction to Scheduling (1) Bursts of CPU usage alternate with periods
International Engineering Journal For Research & Development
Evolution Of Operating System And Open Source Android Application Nilesh T.Gole 1, Amit Manikrao 2, Niraj Kanot 3,Mohan Pande 4 1,M.tech(CSE)JNTU, 2 M.tech(CSE)SGBAU, 3 M.tech(CSE),JNTU, Hyderabad 1 sheyanilu@gmail.com,
Introduction to Operating Systems. Perspective of the Computer. System Software. Indiana University Chen Yu
Introduction to Operating Systems Indiana University Chen Yu Perspective of the Computer System Software A general piece of software with common functionalities that support many applications. Example:
CS420: Operating Systems OS Services & System Calls
NK YORK COLLEGE OF PENNSYLVANIA HG OK 2 YORK COLLEGE OF PENNSYLVAN OS Services & System Calls James Moscola Department of Physical Sciences York College of Pennsylvania Based on Operating System Concepts,
CPU Scheduling. CPU Scheduling
CPU Scheduling Electrical and Computer Engineering Stephen Kim (dskim@iupui.edu) ECE/IUPUI RTOS & APPS 1 CPU Scheduling Basic Concepts Scheduling Criteria Scheduling Algorithms Multiple-Processor Scheduling
3 - Introduction to Operating Systems
3 - Introduction to Operating Systems Mark Handley What is an Operating System? An OS is a program that: manages the computer hardware. provides the basis on which application programs can be built and
I/O. Input/Output. Types of devices. Interface. Computer hardware
I/O Input/Output One of the functions of the OS, controlling the I/O devices Wide range in type and speed The OS is concerned with how the interface between the hardware and the user is made The goal in
1. Computer System Structure and Components
1 Computer System Structure and Components Computer System Layers Various Computer Programs OS System Calls (eg, fork, execv, write, etc) KERNEL/Behavior or CPU Device Drivers Device Controllers Devices
COS 318: Operating Systems. I/O Device and Drivers. Input and Output. Definitions and General Method. Revisit Hardware
COS 318: Operating Systems I/O and Drivers Input and Output A computer s job is to process data Computation (, cache, and memory) Move data into and out of a system (between I/O devices and memory) Challenges
Operating Systems Introduction
Operating Systems Introduction Chester Rebeiro IIT Madras Webpage : http://www.cse.iitm.ac.in/~chester/courses/15o_os/index.html The Layers in Systems Applications Operating Systems Computer Organization
Page 1 of 5. IS 335: Information Technology in Business Lecture Outline Operating Systems
Lecture Outline Operating Systems Objectives Describe the functions and layers of an operating system List the resources allocated by the operating system and describe the allocation process Explain how
Star System. 2004 Deitel & Associates, Inc. All rights reserved.
Star System Apple Macintosh 1984 First commercial OS GUI Chapter 1 Introduction to Operating Systems Outline 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 Introduction What Is an Operating System?
S7 for Windows S7-300/400
S7 for Windows S7-300/400 A Programming System for the Siemens S7 300 / 400 PLC s IBHsoftec has an efficient and straight-forward programming system for the Simatic S7-300 and ern controller concept can
How do Users and Processes interact with the Operating System? Services for Processes. OS Structure with Services. Services for the OS Itself
How do Users and Processes interact with the Operating System? Users interact indirectly through a collection of system programs that make up the operating system interface. The interface could be: A GUI,
CS161: Operating Systems
CS161: Operating Systems Matt Welsh mdw@eecs.harvard.edu Lecture 2: OS Structure and System Calls February 6, 2007 1 Lecture Overview Protection Boundaries and Privilege Levels What makes the kernel different
Chapter 1: Operating System Models 1 2 Operating System Models 2.1 Introduction Over the past several years, a number of trends affecting operating system design are witnessed and foremost among them is
Advanced Operating System
? Advanced Operating System Importance of Operating Systems, Basic Concepts and Terminology, An Operating System Resource Memory Management Functions, Processor Management Functions, Device Management
Using Virtual PC 7.0 for Mac with GalleryPro
Using Virtual PC 7.0 for Mac with GalleryPro Installing and Configuring What is Virtual PC for Mac? Virtual PC (VPC) is emulation software that simulates an actual (though virtual) Windows computer running
Main Points. Scheduling policy: what to do next, when there are multiple threads ready to run. Definitions. Uniprocessor policies
Scheduling Main Points Scheduling policy: what to do next, when there are multiple threads ready to run Or multiple packets to send, or web requests to serve, or Definitions response time, throughput,
Convenience: An OS makes a computer more convenient to use. Efficiency: An OS allows the computer system resources to be used in an efficient manner.
Introduction to Operating System PCSC-301 (For UG students) (Class notes and reference books are required to complete this study) Release Date: 27.12.2014 Operating System Objectives and Functions An OS
Operating System Overview. Otto J. Anshus
Operating System Overview Otto J. Anshus A Typical Computer CPU... CPU Memory Chipset I/O bus ROM Keyboard Network A Typical Computer System CPU. CPU Memory Application(s) Operating System ROM OS Apps
OS OBJECTIVE QUESTIONS
OS OBJECTIVE QUESTIONS Which one of the following is Little s formula Where n is the average queue length, W is the time that a process waits 1)n=Lambda*W 2)n=Lambda/W 3)n=Lambda^W 4)n=Lambda*(W-n) Answer:1
find model parameters, to validate models, and to develop inputs for models. c 1994 Raj Jain 7.1
Monitors Monitor: A tool used to observe the activities on a system. Usage: A system programmer may use a monitor to improve software performance. Find frequently used segments of the software. A systems
Virtualization for Cloud Computing
Virtualization for Cloud Computing Dr. Sanjay P. Ahuja, Ph.D. 2010-14 FIS Distinguished Professor of Computer Science School of Computing, UNF CLOUD COMPUTING On demand provision of computational resources
Origins of Operating Systems OS/360. Martin Grund HPI
Origins of Operating Systems OS/360 HPI Table of Contents IBM System 360 Functional Structure of OS/360 Virtual Machine Time Sharing 2 Welcome to Big Blue 3 IBM System 360 In 1964 IBM announced the IBM-360
3 SOFTWARE AND PROGRAMMING LANGUAGES
3 SOFTWARE AND PROGRAMMING LANGUAGES 3.1 INTRODUCTION In the previous lesson we discussed about the different parts and configurations of computer. It has been mentioned that programs or instructions have
Outline. hardware components programming environments. installing Python executing Python code. decimal and binary notations running Sage
Outline 1 Computer Architecture hardware components programming environments 2 Getting Started with Python installing Python executing Python code 3 Number Systems decimal and binary notations running
Software systems and issues
Software systems and issues operating systems controlling the computer file systems and databases storing information applications programs that do things cloud computing, virtual machines, platforms where
OPERATING SYSTEMS SCHEDULING
OPERATING SYSTEMS SCHEDULING Jerry Breecher 5: CPU- 1 CPU What Is In This Chapter? This chapter is about how to get a process attached to a processor. It centers around efficient algorithms that perform
Memory management basics (1) Requirements (1) Objectives. Operating Systems Part of E1.9 - Principles of Computers and Software Engineering
Memory management basics (1) Requirements (1) Operating Systems Part of E1.9 - Principles of Computers and Software Engineering Lecture 7: Memory Management I Memory management intends to satisfy the following
Computer Organization & Architecture Lecture #19
Computer Organization & Architecture Lecture #19 Input/Output The computer system s I/O architecture is its interface to the outside world. This architecture is designed to provide a systematic means of
THREE YEAR DEGREE (HONS.) COURSE BACHELOR OF COMPUTER APPLICATION (BCA) First Year Paper I Computer Fundamentals
THREE YEAR DEGREE (HONS.) COURSE BACHELOR OF COMPUTER APPLICATION (BCA) First Year Paper I Computer Fundamentals Full Marks 100 (Theory 75, Practical 25) Introduction to Computers :- What is Computer?
SOFTWARE TECHNOLOGIES
SOFTWARE TECHNOLOGIES (September 2, 2015) BUS3500 - Abdou Illia, Fall 2015 1 LEARNING GOALS Identify the different types of systems software. Explain the main functions of operating systems. Know the various
Have both hardware and software. Want to hide the details from the programmer (user).
Input/Output Devices Chapter 5 of Tanenbaum. Have both hardware and software. Want to hide the details from the programmer (user). Ideally have the same interface to all devices (device independence).
Computers: Tools for an Information Age
Computers: Tools for an Information Age Chapter 3 Operating Systems: Software in the Background Objectives of Chapter 3 Describe the functions of an Operating System Explain the basics of a personal computer
Last Class: OS and Computer Architecture. Last Class: OS and Computer Architecture
Last Class: OS and Computer Architecture System bus Network card CPU, memory, I/O devices, network card, system bus Lecture 3, page 1 Last Class: OS and Computer Architecture OS Service Protection Interrupts
EECS 678: Introduction to Operating Systems
EECS 678: Introduction to Operating Systems 1 About Me Heechul Yun, Assistant Prof., Dept. of EECS Office: 3040 Eaton, 236 Nichols Email: heechul.yun@ku.edu Research Areas Operating systems and architecture
I/O Device and Drivers
COS 318: Operating Systems I/O Device and Drivers Prof. Margaret Martonosi Computer Science Department Princeton University http://www.cs.princeton.edu/courses/archive/fall11/cos318/ Announcements Project
INTRODUCTION TO OPERATING SYSTEMS
1 INTRODUCTION TO OPERATING SYSTEMS Unit Structure 1.0 Objectives 1.1 Introduction 1.2 OS and computer system 1.3 System performance 1.4 Classes of operating systems 1.4.1 Batch processing systems 1.4.1.1
LSN 10 Linux Overview
LSN 10 Linux Overview ECT362 Operating Systems Department of Engineering Technology LSN 10 Linux Overview Linux Contemporary open source implementation of UNIX available for free on the Internet Introduced
Programming for GCSE Topic H: Operating Systems
Programming for GCSE Topic H: Operating Systems William Marsh School of Electronic Engineering and Computer Science Queen Mary University of London Aims Introduce Operating Systems Core concepts Processes
Chapter 6, The Operating System Machine Level
Chapter 6, The Operating System Machine Level 6.1 Virtual Memory 6.2 Virtual I/O Instructions 6.3 Virtual Instructions For Parallel Processing 6.4 Example Operating Systems 6.5 Summary Virtual Memory General
Cloud Computing through Virtualization and HPC technologies
Cloud Computing through Virtualization and HPC technologies William Lu, Ph.D. 1 Agenda Cloud Computing & HPC A Case of HPC Implementation Application Performance in VM Summary 2 Cloud Computing & HPC HPC
Linux Process Scheduling Policy
Lecture Overview Introduction to Linux process scheduling Policy versus algorithm Linux overall process scheduling objectives Timesharing Dynamic priority Favor I/O-bound process Linux scheduling algorithm
Operating System Organization. Purpose of an OS
Slide 3-1 Operating System Organization Purpose of an OS Slide 3-2 es Coordinate Use of the Abstractions he Abstractions Create the Abstractions 1 OS Requirements Slide 3-3 Provide resource abstractions
Chapter 14 MS-DOS Operating System
Understanding Operating Systems, Fifth Edition 14-1 Chapter 14 MS-DOS Operating System At a Glance Instructor s Manual Table of Contents Overview Objectives s Quick Quizzes Class Discussion Topics Additional
Operating System Components
Lecture Overview Operating system software introduction OS components OS services OS structure Operating Systems - April 24, 2001 Operating System Components Process management Memory management Secondary
Introduction to programming
Unit 1 Introduction to programming Summary Architecture of a computer Programming languages Program = objects + operations First Java program Writing, compiling, and executing a program Program errors
Operating Systems. Notice that, before you can run programs that you write in JavaScript, you need to jump through a few hoops first
Operating Systems Notice that, before you can run programs that you write in JavaScript, you need to jump through a few hoops first JavaScript interpreter Web browser menu / icon / dock??? login??? CPU,
Gigabit Ethernet Design
Gigabit Ethernet Design Laura Jeanne Knapp Network Consultant 1-919-254-8801 laura@lauraknapp.com www.lauraknapp.com Tom Hadley Network Consultant 1-919-301-3052 tmhadley@us.ibm.com HSEdes_ 010 ed and
UNIT 1 OPERATING SYSTEM : AN OVERVIEW
UNIT 1 OPERATING SYSTEM : AN OVERVIEW Operating System : An Overview Structure Page Nos. 1.0 Introduction 5 1.1 Objectives 6 1.2 What is an Operating System? 6 1.3 Goals of an Operating System 8 1.4 Generations
Introduction to Virtual Machines
Introduction to Virtual Machines Introduction Abstraction and interfaces Virtualization Computer system architecture Process virtual machines System virtual machines 1 Abstraction Mechanism to manage complexity
Kernel. What is an Operating System? Systems Software and Application Software. The core of an OS is called kernel, which. Module 9: Operating Systems
Module 9: Operating Systems Objective What is an operating system (OS)? OS kernel, and basic functions OS Examples: MS-DOS, MS Windows, Mac OS Unix/Linux Features of modern OS Graphical operating system
Chapter 7 Memory Management
Operating Systems: Internals and Design Principles Chapter 7 Memory Management Eighth Edition William Stallings Frame Page Segment A fixed-length block of main memory. A fixed-length block of data that
Traditional IBM Mainframe Operating Principles
C H A P T E R 1 7 Traditional IBM Mainframe Operating Principles WHEN YOU FINISH READING THIS CHAPTER YOU SHOULD BE ABLE TO: Distinguish between an absolute address and a relative address. Briefly explain
Readings for this topic: Silberschatz/Galvin/Gagne Chapter 5
77 16 CPU Scheduling Readings for this topic: Silberschatz/Galvin/Gagne Chapter 5 Until now you have heard about processes and memory. From now on you ll hear about resources, the things operated upon