Chapter-01

Chapter-01 - Chapter 1 Introduction 1.1 What is an...

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1 Introduction Chapter 1 1.1 What is an operating system 1.2 History of operating systems 1.3 The operating system zoo 1.4 Computer hardware review 1.5 Operating system concepts 1.6 System calls 1.7 Operating system structure
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2 Introduction A computer system consists of hardware system programs application programs
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3 What is an Operating System It is an extended machine Hides the messy details which must be performed Presents user with a virtual machine, easier to use It is a resource manager Each program gets time with the resource Each program gets space on the resource
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4 History of Operating Systems (2) First generation 1945 - 1955 vacuum tubes, plug boards Second generation 1955 - 1965 transistors, batch systems Third generation 1965 – 1980 ICs and multiprogramming Fourth generation 1980 – present personal computers
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5 History of Operating Systems (1) Early batch system bring cards to 1401 read cards to tape put tape on 7094 which does computing put tape on 1401 which prints output
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6 History of Operating Systems (3) Structure of a typical FMS job – 2 nd generation
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This note was uploaded on 09/15/2011 for the course CDA 4610 taught by Professor Sadjadi during the Fall '09 term at FIU.

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Chapter-01 - Chapter 1 Introduction 1.1 What is an...

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