What is OS and How does work Operating System ?

What is OS ?

An OS (Operating System), is a software program that acts as an intermediary between a computer's hardware and its software. It is responsible for managing and allocating resources such as memory, storage, and processing power, and providing a platform for running other software programs. Examples of popular operating systems include Windows, macOS, and Linux.

The operating system also provides a user interface, such as a command-line interface or a graphical user interface, for interacting with the computer and running software. It also includes basic system tools and utilities for managing files, backups, and security. Additionally, it also manages the communication between the software and the computer hardware, and also manages the communication between different software applications. Some popular operating systems include Windows, MacOS, Linux, iOS, and Android. They are used in a wide range of devices, from personal computers and servers to smartphones and tablets.
How to work Operating System

An operating system works by controlling and allocating the resources of a computer, such as memory, storage, and processing power, to various software programs. When a computer is turned on, the operating system is loaded into memory, and it takes control of the computer. It then manages the communication between the software and the computer hardware, and also manages the communication between different software applications.



The operating system provides a platform, or "environment," for running other software programs. When a software program is launched, the operating system assigns resources to that program and manages the program's access to system resources. The operating system also manages the input and output of data, such as keyboard input, mouse movement, and the display of images and text on the screen.




The operating system also provides a user interface, such as a command-line interface or a graphical user interface, for interacting with the computer and running software. It also includes basic system tools and utilities for managing files, backups, and security.




Overall, the operating system acts as a bridge between the computer's hardware and its software, allowing the computer and its programs to function smoothly and efficiently.

Types of OS

There are several different types of operating systems, each with its own characteristics and uses:


Single-user, single-tasking: This type of operating system can only support one user and one task at a time.


Single-user, multi-tasking: This type of operating system can support one user but multiple tasks at the same time.



Multi-user: This type of operating system can support multiple users at the same time, each with their own tasks.


Distributed: This type of operating system is spread across multiple machines, and allows for distributed processing.



Real-time: This type of operating system is designed for systems that require real-time processing, such as industrial control systems and robotics.


Embedded: This type of operating system is designed for use in embedded devices, such as smartphones and routers.


Mobile: This type of operating system is designed for use in mobile devices, such as smartphones and tablets.


Server: This type of operating system is designed for use in servers, which are specialized computers that provide services to other computers.


Popular examples of operating systems include Windows, macOS, Linux, iOS, and Android.

Explanation of Windows

Windows is a popular operating system developed by Microsoft. It is a type of multi-user, multitasking operating system that is designed for use on personal computers, laptops and workstations. Windows is the most widely used operating system in the world, and it is available in a variety of versions, including Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP.




One of the key features of Windows is its graphical user interface (GUI), which allows users to interact with the computer using visual elements such as icons, menus, and windows. This makes it easy for users to navigate and perform tasks on their computer. Windows also includes a wide range of built-in applications, such as a web browser, media player, and productivity software.



Windows also includes a range of system tools and utilities for managing files, backups, and security. It also includes features such as the ability to run multiple programs at the same time, and to switch between them easily. Windows also includes a taskbar and start menu that allows users to quickly access and launch programs.



Windows has been widely adopted in the enterprise market, and it also has a wide range of software developed for it. The operating system's flexibility, compatibility with a wide range of hardware and software, as well as the support and resources provided by Microsoft, have contributed to its popularity.

Windows version :

Microsoft has released several versions of Windows over the years, each with its own set of features and improvements. Some of the most notable versions include:




Windows 1.0: This was the first version of Windows, and it was released in 1985. It was a simple graphical operating system shell for MS-DOS.




Windows 2.0: This version was released in 1987, and it introduced support for expanded memory and improved graphics.




Windows 3.0: This version was released in 1990, and it introduced a new user interface and support for virtual memory.




Windows 95: This version was released in 1995, and it introduced support for long filenames and Plug and Play hardware.




Windows 98: This version was released in 1998, and it introduced support for USB devices and Internet Explorer 4.0.




Windows 2000: This version was released in 2000, and it was designed for use in businesses. It introduced support for active directory and network printing.




Windows XP: This version was released in 2001, and it was a consumer-oriented release that introduced a new visual style and improved networking capabilities.




Windows Vista: This version was released in 2006, and it introduced a new visual style, improved security features, and support for new hardware.




Windows 7: This version was released in 2009, and it introduced a new taskbar and improved support for touch and other new hardware.




Windows 8 and 8.1: This version was released in 2012, and it introduced a new touch-optimized interface and support for new hardware.




Windows 10: This version was released in 2015, and it introduced a new start menu, virtual desktops, and improved support for touch and other new hardware.




Microsoft is continuously updating Windows 10 with new features and improvements, and it's the most recent version of Windows that is available.

How Developed Windows ?

Windows was developed by Microsoft, a company founded by Bill Gates and Paul Allen in 1975. The development of Windows began in the early 1980s, as an extension of the MS-DOS operating system. At the time, personal computers were still relatively new, and most software was written for use with command-line interfaces. Microsoft saw an opportunity to create a more user-friendly operating system with a graphical user interface (GUI).



The first version of Windows, Windows 1.0, was released in 1985. It was a simple graphical operating system shell that ran on top of MS-DOS. Windows 1.0 was not a standalone operating system, but rather an extension of MS-DOS that provided a more user-friendly interface.




Over the next several years, Microsoft released several new versions of Windows, each with its own set of features and improvements. Windows 2.0, released in 1987, introduced support for expanded memory and improved graphics. Windows 3.0, released in 1990, introduced a new user interface and support for virtual memory. Windows 95, released in 1995, introduced support for long filenames and Plug and Play hardware.




With each new version, Windows became more popular and gained a larger share of the market. In the 1990s, Windows became the dominant operating system for personal computers, and it has remained so to this day. Today, Windows is available in a variety of versions, including Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP, and it is used by billions of people around the world.