OPERATING SYSTEM

OPERATING SYSTEM

1. WHAT IS AN OPERATING SYSTEM?

   • An operating system is a low-level software that supports a computers function, such as schueduling tasks.

2. WHAT IS THE PURPOSE OF AN OPERATING SYSTEM?

   • Its an essential componet of the system software in a computer system. Application programs usually require an operating system to function.

3. WHAT ARE THE MOST COMMON OPERATING SYSTEMS?

   • Windows, Apple, Linux and Ubuntu

4. FUNCTIONS

   • Provides a user interface
   • Booting the computer
   • Managing the hardware and software
   • File managment

5. WHAT IS GUI?

   • Stands for graphical user interface. It allows users to interact with electronic devices through graphical icons and visual indicators.
   • Advantages:
     • It can be user friendly
     • It can be more attractive for non-technical people
     • It looks more professional
   • Disadvantages:
     • When it is not properly built, it can be difficult to work with
     • Requires more memory resource than a non-graphical one
     • Might require installation of additional software (e.g. running time)

6. WHAT IS A CLI?

   • Was the primary means of interaction with most computer systems until the introduction of the video display terminal in the mid-1960s
   • Advantages:
     • Needs much less memory (RAM) in order to use it than other user interfaces
     • Uses less CPU processing time compared to others
     • Doesn't require Windows to run
   • Disadvantages:
     • Can be confusing for someone who has never used it before
     • Commands have to be types precisely; if there is a spelling error the command will fail
     • You can't guess what the instruction might be. You've got to know all the instructions in order to succed