Operating Systems

You must watch the video to the end to complete this lesson. Once you have watched the video and completed the tasks, please click on “Mark As Complete” at the top right of your screen.

TopicI should be able to…
1.3Define and describe operating systems which contain a Command Line Interface (CLI)
Define and describe operating systems which contain a Graphical User Interface (GUI)
Describe the differences, including the benefits and drawbacks, between operating systems which contain a
CLI and those which contain a GUI

Operating systems are a type of system software that is vital in order for our computer systems to actually run. They can generally be split into two main types and as part of the iGCSE, you will be expected to be able to compare them.

Activity 1

Watch the video above where the need for an operating system is discussed in more detail.

Command Line Interfaces

A command line interface is a text based operating system interface designed for technical users. Through entering a set of commands, the user can access, edit, or even delete any part of the system. Most operating systems have these built in (even those that use a GUI), but they are often hidden or disabled in schools and workplaces to prevent accidental or malicious damage to data.

Graphical User Interfaces

GUIs (sometimes pronounced Gooey), are more user friendly and allow for the complexity of the computer to be hidden behind four main elements:

Windows – each program runs in it’s own window that can be resized, minimised or closed.

Icons – user friendly images to help open programs & files

Menus – pop up areas with links to programs and files

Pointers – your mouse cursor!

Activity 2

Download & print the notes sheet below & record as much as you can remember from the video and previous sections about operating systems.

Activity 3

Complete the interactive crossword below to test your knowledge of our key words so far…