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WHY DO WE NEED AN OPERATING SYSTEM?
An Operating System (OS) is essential for a computer to
function. The OS acts as a bridge between the user and
the computer hardware. The OS controls and manages
the computer’s hardware and software to ensure they
work together smoothly. Without an OS, you wouldn’t
be able to run applications like web browsers, word
processors, or games. The OS provides the platform
that these programs need to operate.
FUNCTIONS OF AN OPERATING SYSTEM
When we turn on the computer, the operating system begins its job. After the computer starts up
(a process called booting), the operating system gets loaded into the computer's memory. Once
it's loaded, it takes charge of managing and running all the computer's tasks.
An operating system performs many important functions. Some of these are:
Boost Bits
Arranging Files and Folders: The operating
system helps you to organise the files and
The process of loading an operating
folders on the computer. It also tracks when system is called booting the system.
you create, copy, or change a file.
Assigning Tasks to the CPU: The operating system tells the CPU what tasks to do based on
your instructions. It also helps control the execution of the tasks. It also ensures the CPU has
everything to finish the tasks.
Managing Memory: The operating system helps manage the computer's memory. It keeps
track of which parts of the memory are being used by programs and which parts are free.
It also gives memory to files and folders. When we delete something, the operating system
frees up that memory so it can be used again.
Managing Resources: An operating system keeps track of the hardware and software
requirements of the processes. It works as a manager of the resources and allocates them to
different programs.
Managing Devices: The OS controls all the devices you connect to your computer, such as a
mouse, keyboard, or printer. It makes sure these devices work correctly with your computer
and follow your instructions. For example, when you type using the keyboard, the OS helps
the computer understand and display what you are typing on the screen.
Security: The OS has built-in security features to protect your computer from unauthorised
access. This means it helps keep your programs and files safe from people who should not
be able to access them. It controls who can log in and what actions they can perform on your
computer.
8 TrackGPT iPRO (V5.0)-VIII

