OPERATING SYSTEMS : The hidden heroes of our devices

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Do you ever think about how our computers work ??


We all love our gadgets, right?

Laptops 💻, computers 🖥️, and mobiles 📱 have become an inseparable part of our daily lives. But wait! Have you ever wondered what makes these devices work? Let’s dive into the world of operating systems, the unsung heroes behind the scenes!



I'm gonna take you all back to 1950 to know how earlier computers worked without Operating Systems and how inefficient they are. At that time, computers were like slow-thinking dinosaurs. They took ages to load, and could only do one thing at a time. Those computers couldn't run multiple programs simultaneously.



Since then, Operating systems have come to the rescue! No more waiting forever for your machine to do something. Now, we can multitask like pros without a hitch, and we no longer have to worry about wasting time. 


"Thanks to operating systems and their evaluation"




Operating Systems and how it works :


Definition: Operating system works as an intermediary between the user and computer hardware.

Let me explain this!
For example you downloading a file from an internet browser :

  • First you will click on a download button in the internet browser application.
  • Then, the internet browser application communicates this action to the OS.
  • The OS sends the request to download the file to the appropriate hardware of the computer.
  • The hardware begins downloading the file.
  • Then the OS sends this information to the internet browser application.
  • The internet browser then informs me when the file has been downloaded.

USER
APPLICATION
OPERATING SYSTEM

COMPUTER HARDWARE




Different Types of Operating Systems:



Computers/Laptops :



Windows :

  • Introduced in 1985.
  • Used in most PCs.
  • Easy to operate, user-friendly.

macOS:

  • Introduced in 1984.
  • Used in MacBooks and Apple devices.
  • More secure than Windows.

Linux :

  • Introduced in 1991.
  • Used in web servers.
  • Very fast, but complex for users.


Smartphones :

 


Android :

  • Introduced in 2008.
  • Used in all Android phones.

iOS :

  • Introduced in 2007.
  • Used in all iPhones.

Role of OS when we turn on the computer :




First, let's see what happens when you turn on a computer. When you press the power button, BIOS will be activated and load the Bootloader, and then the Bootloader will start the OS, and after that, your computer is on.

Here comes a question, what is BIOS?


BIOS means Basic Input/Output System. It is a special microchip that contains booting instructions that are responsible for loading a special program called the bootloader. Aren't you getting confused 😅? 

Even I have also taken a lot of time to understand this BIOS concept.



Let's understand this in a simple manner."BIOS is a special microchip, it will help to boot the Operating System."Nowadays, computers built after 2007 started using UEFI instead of BIOS. Both UEFI and BIOS will do the same thing, but UEFI is the new version.


BIOS - Basic Input/Output System

UEFI - Unified Extensible Firmware Interface



Your insights and comments are greatly appreciated
Thankyou😊


-Mehaboob

Location: S.No, 16, Raithu Bazar Rd, Phase I, Hyderabad, Vanasthalipuram, Telangana 500070, India

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