Operating System An Introduction Virendra Singh Associate Professor - - PowerPoint PPT Presentation

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Operating System An Introduction Virendra Singh Associate Professor - - PowerPoint PPT Presentation

Mar 12, 2024 171 likes •290 views

Operating System An Introduction Virendra Singh Associate Professor Computer Architecture and Dependable Systems Lab Department of Electrical Engineering Indian Institute of Technology Bombay http://www.ee.iitb.ac.in/~viren/ E-mail:

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SLIDE 1

CADSL

Operating System

An Introduction

Virendra Singh

Associate Professor Computer Architecture and Dependable Systems Lab Department of Electrical Engineering Indian Institute of Technology Bombay

http://www.ee.iitb.ac.in/~viren/ E-mail: viren@ee.iitb.ac.in

EE-717/453:Advance Computing for Electrical Engineers

Lecture 20 (10 Oct 2013)

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SLIDE 2

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Introduction

l A computer system consists

  • f
  • Hardware
  • System programs
  • Application programs

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 3

CADSL

3

What is an Operating System

l 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

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 4

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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

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 5

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History of Operating Systems (2)

l First generation 1945 - 1955

  • vacuum tubes, plug boards

l Second generation 1955 - 1965

  • transistors, batch systems

l Third generation 1965 – 1980

  • ICs and multiprogramming

l Fourth generation 1980 – present

  • personal computers

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 6

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6

History of Operating Systems (3)

l Structure of a typical FMS job – 2nd generation

10 Oct 2012 EE-717/EE-453@IITB

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History of Operating Systems (4)

l Multiprogramming system

  • three jobs in memory – 3rd generation

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 8

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The Operating System Zoo

l Mainframe operating systems l Server operating systems l Multiprocessor operating systems l Personal computer operating systems l Real-time operating systems l Embedded operating systems l Smart card operating systems

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 9

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Computer Hardware Review (1)

l Components of a simple personal computer

Monitor

Bus

10 Oct 2012 EE-717/EE-453@IITB

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SLIDE 10

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Computer Hardware Review (2)

(a) A three-stage pipeline (b) A superscalar CPU

10 Oct 2012 EE-717/EE-453@IITB