PPT-1 Jerry Breecher OPERATING SYSTEMS

History and Hardware 1 Operating Systems Overview 2 This is the simplest animal with a brain Caenorphabditis elegans C elegans  is one of the simplest organisms with a nervous system This system comprises 302 neurons the pattern of which has been comprehensively mapped in what is known as a connectome . 1. 11. I/O Systems. 11.1 Basic Issues in Device Management. 11.2 A Hierarchical Model. 11.3 I/O Devices. 11.4 Device Drivers. Memory-Mapped . vs. Explicit Device Interfaces . Programmed I/O with Polling . 1. 10. File Systems. 10.1 Basic Functions of File Management. 10.2 Hierarchical Model of a File System . 10.3 User’s View of Files. Logical File Organization. Operations on Files. 10.4 . File Directories. 1. 4. The OS Kernel. 4.1 Kernel Definitions and Objects. 4.2 Queue Structures. 4.3 Threads. 4.4 Implementing Processes and Threads. Process and Thread Descriptors. Implementing the Operations. 4.5 Implementing Synchronization and Communication Mechanisms. 1. 6. Deadlocks. 6.1 Deadlocks with Reusable and Consumable. . Resources. 6.2 Approaches to the Deadlock Problem . 6.3 A System Model . Resource Graphs . State Transitions. Deadlock States and Safe States . S. pinelli. By: Savannah Plumlee. B. iography. J. erry . S. pinelli. was born February 1. st. 1941 in Norristown Pennsylvania, on the outskirts of Philadelphia. Jerry had never imagined himself as a future writer.. and never read more than the words printed on the back of cereal boxes. Instead, he dreamed of becoming a cowboy. He loved country tunes, Roy Rogers, and cowboy apparel, sporting spurs on his heels in grade school. By the time Jerry reached age eleven, though, the cowboy phase had passed and was replaced by a passion for sports, baseball especially, Jerry imagined about playing professional shortstop, preferably for the New York Yankees. It was not until his junior year of high school that he wrote a poem that would change his dream of homeruns and the World Series to a dream of bestsellers and, eventually, a Newbery Medal.. . 1. 8. Virtual Memory. 8.1 Principles of Virtual Memory . 8.2 Implementations of Virtual Memory . Paging. Segmentation. Paging With Segmentation. Paging of System Tables. Translation Look-aside Buffers . Seventh Edition. Chapter 7. Device Management. Learning Objectives. After completing this chapter, you should be able to describe:. Features of dedicated, shared, and virtual devices. Concepts of blocking and buffering, and how they improve I/O performance. Sig Freund. CSC 8320 Fall . 2008. rfreund1@student.gsu.edu. Transparency in Distributed Operating Systems. Evolution of Modern Operating Systems. Centralized operating system. +network access and resource sharing. Real Time OS. Batch OS. Time Sharing OS. Why do we have different Operating Systems . Common types of Operating Systems . The Operating System . The OS is responsible for all the functions of hardware and also software. Dr . Damitha. . Karunaratna. . University of Colombo school of computing. Topics to discuss. What is an operating system(OS)?. Main objectives of an OS. Main functions of an OS. Evolution of OS.. OPERATING SYSTEMS. SCHEDULING. 5: CPU-Scheduling. 2. 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 well.. Keywords. System . Software, Operating . System (. OS), Virtual Machine, Utility Programs, Device Drivers, . Multitasking, Time Slice, Processor . Management, User Interface, Graphical . User . Interface, Command . Chapter Contents. Section A: Operating System Basics. Section B: Today’s Operating Systems. Section C: File Basics. Section D: File Management. Section E: Backup Security. Chapter 4: Operating Systems and File Management. Chapter Contents. Section A: Operating System Basics. Section B: Today’s Operating Systems. Section C: File Basics. Section D: File Management. Section E: Backup Security. Chapter 4: Operating Systems and File Management.