1. GCSE ICT By the end of this session, you will be able to:  Understand concept of a Windows operating system and have a basic understanding of GUI.

2. Windows OS Available on most computers. Microsoft first introduced an operating environment named Windows in November 1985. Developed in response to the growing interest in graphical user interfaces (GUIs). Microsoft Windows eventually came to dominate the world's personal computer market

3. Windows OS Windows OS is simply a piece of software created to allow users and the computer (all it’s hardware and software) to communicate with each other. To do this in a user friendly way, it uses a Graphical User Interface…or GUI.

4. Graphical User Interface Simply, a GUI is a one where the Operating System uses a WIMP environment: Windows – The boxes on the screen. Icons – The pictures on the screen. Menus – Umm, the menus on the screen. Pointers – Being able to use your mouse to select options.

5. The UNIX GUI

6. The Mac GUI

7. The First Windows GUI!

8. The Later Windows GUI

9. A few lesser known ones: