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2 Jun 2011 Chapter 1. Basic Concepts of. Operating Systems. 1.1 Introduction. The operating system is an essential part of a computer system; it is an intermediary component between the application programs and the hardware. The ultimate purpose of an operating system is twofold: (1) to provide various services to
What is an Operating System? • A program which controls the execution of all other programs. (applications). • Acts as an intermediary between the user(s) and the computer. • Objectives: – convenience,. – efficiency,. – extensibility. • Similar to a government. . . Operating Systems — Introduction. 1
familiarise yourself with characteristics of computers. • identify the basic components of a computer. • explain the importance of various units of a computer. • differentiate between system software and application software. • explain the importance of operating system. • get acquainted with open source. • appreciate the need
Operating System. 1. 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 of the system software in a computer system. This tutorial will take you through step by
Quiz-2 Review. Computer-System Operation. • I/O devices and the CPU can execute concurrently. • Each device controller is in charge of a particular device type. • Each device controller has a local buffer. • CPU moves data from/to main memory to/from local buffers. • I/O is from the device to local buffer of controller.
Operating Systems. • User interfaces. – Software which is responsible for passing information to and from the person using the program (the user). – Communicates with and controls the computer. – Three types of user interface: » Graphic user interfaces. » Menu driven interfaces. » Command driven interfaces. Operating.
Lecture Notes. Week, Topic, Notes. 1. Introduction to Operating Systems and Computer Systems/OS Structures. Lecture 1-2: [ pdf ]. 2. Processes and Threads. Lecture 3-5: [ pdf (updated on Apr 13) ]. 3. CPU Scheduling. Lecture 6-7: [ pdf (updated on Apr 20) ]. 4. Synchronization part-1. Lecture 8-10: [ pdf (udpated on May 2) ].
Operating System Concepts Essentials – 2nd Edition. Computer-System Operation. ? I/O devices and the CPU can execute concurrently. ? Each device controller is in charge of a particular device type. ? Each device controller has a local buffer. ? CPU moves data from/to main memory to/from local buffers. ? I/O is from
3 Nov 1971 Individual work - 96 h per semestre. Assesment - Examination. Course aim: Understandig of Operating System's functions. Course description: Concept of operating system. Control the activities and resourses of computer. Interpreting comands. Coordinating activities. Operating systems MS-DOS, OS/2,
Computer Science. Lecture 2, page. Computer Science. CS377: Operating Systems. Last Class: Introduction to Operating. Systems. • An operating system is the interface between the user and the architecture. – History lesson in change. – OS reacts to changes in hardware, and can motivate changes. User apps. OS.
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