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Operating System
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Learning Outcomes
Operating System Why Do We Need an Operating System?
Functions of an Operating System Types of Operating System
What is a User Interface? A comparison Between CUI and GUI
A computer system is a combination of hardware and software. If any of these are missing, then
the computer will not work properly. The physical components of the computer system that
we can see and touch are called hardware. Some examples of hardware are keyboard, mouse,
monitor, etc. whereas software is a program or collection of programs that perform a particular
task. Both hardware and software are interdependent parts of the computer system.
Software can be further divided into two categories:
• System Software: System software helps the user to operate the
computer system & utilize its different resources. It coordinates the
operation and functioning of a computer along with the attached
hardware components of the computer. System software acts as an
interface or a bridge between the user and the computer.
• Application Software: Application software refers to programs which
are designed to accomplish particular type of tasks to meet a user’s
specific needs. This type of software allows users to do their work
more efficiently and easily, for example, Tally software is used to do
accounts-related tasks in organisations and Microsoft Word is used to
perform day-to-day work such as typing letters and documents.
i + OPERATING SYSTEM
An Operating System (OS) is a system software that acts as an interface between hardware and
the user. It manages and coordinates the operation and the sharing of resources of the computer.
It acts as a host for applications that run on the computer and handles the operation of the
hardware.
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Operating System

