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Operating Systems. Write today’s date and title in the front of your book. Underline it. Starter. http://www.youtube.com/watch?v=tGvHNNOLnCk Or watch from the shared area Questions… How much was Windows 1? More to the point – what is Windows?. Lesson Objectives .

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operating systems

Operating Systems

Write today’s date and title in the front of your book.

Underline it.

starter
Starter
  • http://www.youtube.com/watch?v=tGvHNNOLnCk
  • Or watch from the shared area
  • Questions…
  • How much was Windows 1?
  • More to the point – what is Windows?
lesson objectives
Lesson Objectives
  • By the end of this lesson you will:
  • Be able to define what an operating system is
  • Be able to identify an Operating System
  • Identify features of command line and GUI Operating Systems
operating systems1
Operating Systems
  • Basically it’s the middle man.
  • The Operating System or OS sits between your hardware and software.
  • An OS is SOFTWARE too!
  • It controls, organises and manages the interactions between all hardware and software
  • If something is plugged in to your computer – the OS is controlling it.
what does an os consist of
What does an OS consist of…
  • OS’s come in several parts:
  • Part of the software is responsible for interacting with the hardware – this is

called the Kernel.

  • The important part you see is the

Interface – this is responsible for displaying information to the user and getting

commands and input from the user.

questions
Questions…
  • What does OS stand for?
  • Is the OS hardware or software?
  • What is an interface?
  • What does an OS do?
summary
Summary
  • Operating System = OS
  • OS = Software
  • It controls, organises and manages the interactions between all hardware and software
what does it do
What does it do…

The general tasks for a typical operating system include:

  • Controlling the operation of the input, output and backing storage devices
  • Managing resources
  • Supervising the loading, running and storage of application programs
  • Dealing with errors that occur in applications programs
  • Allowing communication between user and the computer

system (user interface)

research
Research…
  • Find out what a GUI is.
  • Find 3 examples of GUI operating systems.
  • Look at your computer – write down 3 features of windows that you think makes it easy to use, explain why...
gui graphical user interface
GUI – Graphical User Interface
  • GUI – Graphical User Interface
    • Uses Windows, Icons, Menus, Pointers to

organise information and allow user interactions.

  • Intuitive – The user can work out how to do a lot of things without any
  • help or training
  • Makes multitasking easy – can organise and arrange many windows
  • Icons give clear representations of programs, files and folders
  • Pointers are a natural way of selecting things – point to what you want
  • Takes up a lot of space in memory and storage
  • Can be resource hungry – needs a reasonably powerful computer
  • Can become confusing if the screen is cluttered with many icons or open
  • programs
command line interface
Command Line Interface…
  • What do you think these do?
    • dir
    • md
    • cd c:\
    • rd
  • Watch the teacher demonstration of a Command Line… (laptop or using the shortcut in the folder/VLE)
command line interface1
Command Line Interface…
  • What do you think are the advantages and disadvantages of this system?
  • Where do you think this kind of OS would be used?
command line interface2
Command Line Interface
  • Command Line Interface
    • Allows the user to interact with the device by typing

written instructions/ commands

  • Takes up very little memory and storage – good for embedded systems
  • Can write lists of commands called “scripts” to automate repetitive tasks
  • Can be much faster to use once familiar with shortcuts and commands
  • Can be confusing for new users.
  • Difficult if you have dyslexia / sight problems
  • You must know the commands or you can’t do anything!
  • Not intuitive
plenary
Plenary…
  • What is an operating system?
  • What does GUI stand for?
  • What does WIMP stand for?
  • List 2 features of a command line interface?
  • Who is likely to use a command line interface?
extras
Extras…
  • The History of Windows…
  • http://www.youtube.com/watch?v=TWfcZmynwFU
  • Have a go on Windows 3.1…
  • www.michaelv.org
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