What is Operating System ?
An operating system is a software that runs on a computer.
It works as an interface between the software and the computer hardware.
It is able to manage the memory, software and hardware of the computer.
It controls and monitors the execution of all resources and operations of the computer.
Every computer have at least one OS to run other programs.
It provides the environment to all the applications like MS Word, Games, chrome etc. to run and give the permission to perform their task.
It is not possible for the user to use any computer or mobile device without having an operating system also the computer is useless without O.S.
Need of Operating System
It receive input from the keyboard and display the output on the screen.
Track the files in storage devices.
It ensure that different programs running at the same time do not interfere with each other.
The operating system coordinates with all to make sure each program gets what it needs.
An operating system (OS) handles the computer requirements by finding resources, applying hardware management and providing necessary services.
It manages set of resources and utilize every part of a computer.
Different type of Operating Systems:
Microsoft Windows
Apple iOS
Google's Android OS
Linux Operating System
Windows Phone OS
Mac OS
Types of Operating System
Advantages of Operating System
It must make sure that the computer system convenient to use.
Easy to use with a GUI (Graphical user interface).
Follow the scheme of an abstraction to hide details of hardware.
It convert a program into the process.
It manage input, output and resource allocation.
OS is responsible to schedule the process for the execution on CPU.
Disadvantages of Operating System
It is not secure as a threat can occur at any time.
It is a bit difficult to run Linux compared to Windows.
Data can be loss if system crash.