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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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