OPERATING SYSTEM
Definition of Operating System
Operating system is a set of program that coordinates all the activities among computer hardware devices. It also contains instructions that allow users to run application software. When a user starts a computer, portions of the operating system (OS) load into memory from the computer’s hard disk. It remains in memory while the computer is on. The operating system provides a means for users to communicate with other software. It is the operating system that makes the computer understands the user’s instructions and command. It is the life-wire of a computer system. It does the loading and schedule of all activities going on in a computer system.
For users to be able to interact with the computer machine, the operating system provides the user with what is called user interface (UI)
The Meaning of User Interface
What is user interface (UI)? This is the space through where interactions between humans and machine occur. The goal of UI is to allow effective operation of the computer machine.
Types of User Interface
(i) Command based interface: In command based interface, lines of command are used to instruct or communicate with the computer system.
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