ITFN 2601 Introduction to Operating Systems

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ITFN 2601Introduction to Operating Systems

• Jon A. Preston
• jonpreston_at_mail.clayton.edu

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Agenda

• OS Introduction
• Web Site
• Syllabus
• Expectations
• Schedule
• The beginning of the end

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So What is an OS?

• And Ya Cant Say
• Operating System

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OS Placement
Applications (Word, IE, Games, etc.)
User
Low-level apps (compilers, interpreters, editors)
Operating System
Machine Language (Binary)
Machine
Microarchitecture (processor-level)
Physical Devices (Hardware)
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OS Defined

• Extended Machine
• Service provider for hardware
• Abstracts the details of the machine
• Provides an API (system calls) to user
• Resource Manager
• Multiple users, multiple resources
• Orderly, controlled allocation of resources
• Fairness, protection, space-time, etc.

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This Course

• Itll be a lot of fun!
• Youll learn a lot
• Youll read a lot
• Youll be challenged

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Web Site

• http//newcollege.clayton.edu/itfn2601
• Contains
• Syllabus
• Schedule
• Projects
• Ill announce e-mail if changes are made

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Syllabus

• Everything you wanted to know about the course
  (but were afraid to ask)
• My contact info (office, etc.)
• Class meeting times
• Textbook
• Grading scheme scale

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Contacting Me

• E-mail is preferable
• jonpreston_at_mail.clayton.edu
• My office is T-109
• Office hours are open door and by appointment.
  Im here to help you!
• DONT rely on phone messages
• I often work out of the office

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Class Meeting Times

• Meeting Time
• Tuesday/Thursday
• 600 PM - 805 PM (T-100)
• OR
• 800 AM 1005 AM (T-100)

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Textbook

• Modern Operating Systems (2nd Edition) by
  Tanenbaum, Prentice Hall

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Grading Scheme

• Two in-class tests 45
• Final exam 35
• Projects 20
• Random, short pop-quizzes may affect your overall
  grade slightly
• Final exam replaces any lower, non-zero test, so
  it can count as much as 80

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Grading Scale

• A gt 90
• B 80 - 90
• C 70 - 80
• D 60 - 70
• F lt 60
• Extra credit may be available, but dont rely
  upon this do your best from the start!

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Philosophy of Education

• Everyone in this course can get an A
• Ill do my part please you do yours
• This is a 2000-level course, so I expect youve
  learned how to succeed in school
• Start assignments early
• Make sure you understand the requirements
• Readings are to be done before lecture

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Expectations

• Attend lecture
• You cant get it all from the book
• Tests/assignments go beyond the text
• Do all assignments
• Dont expect to coast by on group projects - do
  your part
• Effort does not equal results

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Academic Conduct

• ANYTHING goes on HWs
• I expect that you work together on the last
  assignment (program)
• Cite references when you use other sources

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Time Commitment

• Lecture 3 hours
• Reading 6-9 hours
• Assignments 2-3 hours
• Thus you should be putting in 12hours per week
  total for this course

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But Its Not That Bad

• If you do the readings ahead of time, lecture
  will make more sense, and the tests will be a
  breeze!
• Assignments are only ever 3 weeks, so youll have
  feast famine times
• Final exam offers redemption

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Schedule
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History of Operating Systems

• Machine-centric ? Human-centric
• Vacuum Tubes (1945-1955)
• All programming done in machine language
• No OS,
• Usage done by the same people who built the
  machine

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History of OS (cont)

• Transistors Batch (1955-1965)
• University, government, big-business
• Mainframes operators in dedicated rooms
• Punch cards
• Deck readers
• Input/Output bins
• Batch processing onto tape

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History of OS (cont)

• Integrated Circuits (1965-1980)
• Software-compatible product lines
• Birth of the modern notion of the OS
• Multi-purpose machine w/ software (OS)
  intermediary
• Multiprogramming (multiple programs/jobs sharing
  resources)
• UNIX

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History of OS (cont)

• Personal Computing (1980-present)
• LSI chips
• Cheap memory, disk space, processing, etc.
• DOS, Windows, Mac OS, X
• Distributed computing
• PDA/embedded-devices

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Assignment for This Week

• According to the schedule
• Read Chapter 2 (pgs 71-124) before class
• Review your 1101/1112 knowledge
• Come with questions!