Define and describe operating systems which contain a Command Line Interface (CLI) Define and describe operating systems which contain a Graphical User.

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Presentation transcript:

Define 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

Role of an operating System An operating system is a system software that manages the general operation of a computer system: Allows users to load, run and store applications. Also resolve errors occurring applications Provides security and prevents unauthorised access to a system Helps the user interact with the computer through a user interface. Role of an operating System Decided what should be loaded and deleted from memory Helping save, organise, find and delete files Manages input, output and backing devices.

Example GUI Operating Systems

Graphical User Interface (GUI) GUI (Graphical User Interface) is an user interface built around graphics. Windows – areas for displaying information Menus - lists of options or applications users can select from GUI Icons -small images used to represent files/folders or applications Pointers –Mouse pointer can be used to select and open files/applications GUIs are quite easy to use due to the visual nature of the interface The user has lots of visual clues as to what things do. WIMP

Graphical User Interface (GUI) Examples

CLI and is not restricted to a number of predetermined options. Command Line Interface (CLI) CLI requires the user to enter command prompts to interact with the computer. CLI are normally used by expert users as it allows them to is more complicated to use. CLI and is not restricted to a number of predetermined options. Example Command Prompts ATTRIB: Displays or changes file attributes. CD: Displays the name of current directory CHKDSK: Checks a disk and displays a status report Copy: Copies one or more files to another location DIR: Displays a list of files and sub directories

Main Differences between CLI and GUI Graphical User Interface (GUI) Advantages: The user does not need to learn any commands. The interface is easier to use. Can use a pointing device to clicks and select icons or menu options. Disadvantages: Takes up more memory than a CLI interface. Requires an operating system to operate. Command Line Interface (CLI) The user has more freedom to use specific command in interacting with the computer. It is possible to alter computer settings. User needs to learn commands Commands must be typed in without errors. No visual aids.