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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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