Presentation on theme: "Write today’s date and title in the front of your book. Underline it."— Presentation transcript:
1 Write today’s date and title in the front of your book. Underline it. Operating SystemsWrite today’s date and title in the front of your book.Underline it.
2 Starter http://www.youtube.com/watch?v=tGvHNNOLnCk Or watch from the shared areaQuestions…How much was Windows 1?More to the point – what is Windows?
3 Lesson Objectives By the end of this lesson you will: Be able to define what an operating system isBe able to identify an Operating SystemIdentify features of command line and GUI Operating Systems
4 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 softwareIf something is plugged in to your computer – the OS is controlling it.
5 What does an OS consist of… OS’s come in several parts:Part of the software is responsible for interacting with the hardware – this iscalled the Kernel.The important part you see is theInterface – this is responsible for displaying information to the user and gettingcommands and input from the user.
6 Questions…What does OS stand for?Is the OS hardware or software?What is an interface?What does an OS do?
7 Operating System = OS OS = Software SummaryOperating System = OSOS = SoftwareIt controls, organises and manages the interactions between all hardware and software
8 What does it do…The general tasks for a typical operating system include:Controlling the operation of the input, output and backing storage devicesManaging resourcesSupervising the loading, running and storage of application programsDealing with errors that occur in applications programsAllowing communication between user and the computersystem (user interface)
9 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...
10 GUI – Graphical User Interface Uses Windows, Icons, Menus, Pointers toorganise information and allow user interactions.Intuitive – The user can work out how to do a lot of things without anyhelp or trainingMakes multitasking easy – can organise and arrange many windowsIcons give clear representations of programs, files and foldersPointers are a natural way of selecting things – point to what you wantTakes up a lot of space in memory and storageCan be resource hungry – needs a reasonably powerful computerCan become confusing if the screen is cluttered with many icons or openprograms
11 Command Line Interface… What do you think these do?dirmdcd c:\rdWatch the teacher demonstration of a Command Line… (laptop or using the shortcut in the folder/VLE)
12 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?
13 Command Line Interface Allows the user to interact with the device by typingwritten instructions/ commandsTakes up very little memory and storage – good for embedded systemsCan write lists of commands called “scripts” to automate repetitive tasksCan be much faster to use once familiar with shortcuts and commandsCan be confusing for new users.Difficult if you have dyslexia / sight problemsYou must know the commands or you can’t do anything!Not intuitive
14 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?
15 Extras… The History of Windows… Have a go on Windows 3.1…