What is Operating System? – major operating system 2021

What is Operating System?
What is Operating System?

What is Operating System?: Do you know what the operating system is, if not then do not panic, today in this article we will explain to you the operating system in detail? And we will also tell you the Operating System Requirement, Advantages and Disadvantages of Operating System, Main Major Operating System along with many more.

What is operating systems?

The operating system is the software that communicates with the hardware and runs other programs. It consists of software and basic files to boot up the system. Common desktop operating systems include Windows, OS X, and Linux.

Operating system means system software, it is called OS in simple language, you can understand the operating system as a bridge. The computer never works by itself, the computer works only when you instruct it, the operating system is the software that works to transmit your instructions to the computer hardware, that’s why the operating system is considered the most important part of the computer. Is.

operating system requirement

The operating system is required to operate the computer. The operating system is such an important software, which is fully capable of controlling and operating the computer. That is why if without an operating system we cannot give any instructions to the computer i.e. we cannot run the computer.

operating system functions

Today’s era is called the age of the computer, because in today’s time there are many such tasks which are not possible without a computer, due to this the role of operating system increases even more.

Let us now know what are the functions of the operating system, below we have briefly described the functions of the operating system:-

simplify computer systems

Computer systems are capable of understanding only the language of the computer. It is not possible for us to give commands in computer language. This important role of the operating system is to transmit the commands given by us to the computer system.

That is why today the computer has become so advanced that it can easily understand the instructions given in any of our languages.

keeping information private

The operating system is like a bridge between the juicer and the computer hardware, but we do not get any indication about the information exchanged between these two (operating system and hardware). .

This means that we only see what we have entered the inputs for. We do not see unnecessary things on our computers. Which makes it even easier for us to operate the computer.

make computer work easier

Today’s operating systems are state-of-the-art software that works on graphical user interface technology. An app and software required a coding language. Due to Graphical User Interface (GUI) technology, you can give commands to your computer in any way, you do not need any coding or programming for this.


The operating system also acts as a medium between you and the computer hardware, that is, if you give any command to the computer in any way, then this command reaches the computer through the operating system itself.

allocating resources

There is RAM inside the computer. Where computer software or files are stored. If you put software or any other file on your computer, the operating system allocates space for that software or file. Where that software store could stay.

Types of Operating System

Operating systems are divided into many types on a different basis. Now we will know about the different types of operating systems in brief:-

depending on the job

  1. Character User Interface
  2. Graphical User Interface

based on users

  1. Single User Operating System
  2. Multiuser operating system (multiuser user interface)

based on development

  1. Batch Processing System
  2. Time Sharing or Multi User Operating System
  3. Multi Tasking Operating System
  4. Real Time Operating System
  5. Multi Processor Operating System
  6. Embedded Operating System
  7. Distributed Operating System

depending on the job
The operating system is divided into two parts on the basis of work:-

  1. Character User Interface
    Character user interface or command-line user interface is a means for a user interface to give commands by typing with a computer program. It was the first means of connecting with computers in the 1980s, although it can also be accessed in today’s operating systems, but the graphical user interface is rarely used.

The Microsoft disk operating system and Windows Command Prompt are good examples of character user interfaces.

  1. Graphical User Interface
    A graphical user interface is a user interface that includes all kinds of graphical elements, such as windows, icons, and buttons.

Graphical user interface examples include Microsoft Windows, macOS, Ubuntu Unity, and GNOME Shell for desktop environments, and Firefox OS for Android, Apple’s iOS, Blackberry OS, Windows 10 Mobile, Palm OS-webOS, and smartphones.

Based on Users

On the basis of the users the operating system is divided into the following speech:-

  1. Single User Operating System
    Single User Operating System as the name suggests that only one person can work in it at a time. This operating system allows the user to perform more than one task at a time.

Microsoft Windows and Macintosh OS. There are many examples of single-user operating systems.

  1. Multiuser Operating System
    A single network server is also called a “terminal server”. It is an operating system that allows multiple users to access programs that are running concurrently on the same network server.

Examples of multiuser operating systems include UNIX, VMS, etc.
based on development

  1. Batch Processing System
    Batch processing system is one of the oldest operating system which is not commonly used in today’s time. There is no direct connection between the user and the computer in a batch processing system. The user always has to input the job (programming) key form. To process the job in the computer, there was an operator, who used to make batches and give input to the computer. He used to create separate batches of jobs with similar needs and input those batches together in the computer.
  2. Time Sharing or Multi User Operating System
    Time sharing or multi user operating system enables multiple people, located on different terminals, to use a particular computer at the same time. In Time Sharing or Multi User Operating System, the processor time is shared among many users simultaneously, hence it is called Time Sharing Operating System.
    An example of this is a mainframe computer that can have multiple users logged on and each user uses the mainframe’s resources.
  3. Multi Tasking Operating System
    Multitasking Operating System An operating system that allows a user to perform multiple computer tasks at a time. The operating system is able to keep track of where you are doing these tasks and information is passed from one to another without losing information.

Microsoft Windows 2000, IBM’s OS/390, and Linux are examples of operating systems capable of multitasking.

  1. Real Time Operating System
    Real-time operating system (RTOS) is an operating system, intended to serve real-time applications that process data, mostly without buffer delay.

In RTOS, the processing time required is calculated in one-tenth of the second increments of the time. It is a time-bound system that is used due to the constraint of fixed time.

  1. Multi Processor Operating System
    A multi-processor operating system is an operating system that is capable of using two or more CPUs in a single computer. In today’s time multi processor operating system is considered to be very useful.
  2. Embedded Operating System
    An embedded operating system is a specialized operating system designed to perform a specific task for a device that is not a computer. The main job of an embedded operating system is to run the code that allows the device to do its job.
  3. Distributed Operating System
    A distributed operating system is an OS that is capable of running applications on multiple computers connected by communication. A distributed operating system is an extension of a network operating system. Which is capable of working at a high level of communication and integration of machines on the network.

Features of operating system

  • Manages memory, memory is needed to run any program. The operating system manages the memory for programs and provides memory for new programs.
  • work at high speed.
  • The operating system is fully capable of processing two or more programs at the same time, this process is called multi-processing.

Major operating system names

  • Windows operating system
  • Mac OS
  • Linux OS
  • Ubuntu
  • Android OS
  • iOS
  • MS-DOS
  • Symbian OS

What is the client operating system

A desktop or computer does not require an external network or operator to function. Client operating system is the operating system that works within the computer desktop and various portable devices. This system is different from the centralized server as it supports an only a single users.

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