Looking for the old version of this video? You can still view it here. Your computer's operating system OS manages all of the software and hardware on the computer. Most of the time, there are several different computer programs running at the same time, and they all need to access your computer's central processing unit CPU , memory , and storage. The operating system coordinates all of this to make sure each program gets what it needs.
Operating systems usually come pre-loaded on any computer you buy. Most people use the operating system that comes with their computer, but it's possible to upgrade or even change operating systems. The three most common operating systems for personal computers are Microsoft Windows , macOS , and Linux. Modern operating systems use a graphical user interface , or GUI pronounced gooey. A GUI lets you use your mouse to click icons , buttons , and menus , and everything is clearly displayed on the screen using a combination of graphics and text.
Each operating system's GUI has a different look and feel, so if you switch to a different operating system it may seem unfamiliar at first. However, modern operating systems are designed to be easy to use , and most of the basic principles are the same. It allows a program to run on multiple different types of hardware. An operating system provides a layer between the program and hardware to enable a program to use a standard interface no matter what hardware is used.
Operating systems OS are essential because they act as the intermediary between user and hardware. It is safe like — windows have windows defender which detects any type of harmful files and removes them. By this, we can install any game or software and run them.
This increases the working efficiency of our system. This course introduces all aspects of modern operating systems. Whether or not any of them would work for you depends entirely on how you use your computer. Less common alternatives include the mobile devices you may already be using. There are five main types of operating systems.
Operating System Quizes. Table of Contents. Save Article. Improve Article. Like Article. The goal of an Operating System: The fundamental goal of a Computer System is to execute user programs and to make tasks easier.
Various application programs along with hardware systems are used to perform this work. Operating System is software that manages and controls the entire set of resources and effectively utilizes every part of a computer.
The figure shows how OS acts as a medium between hardware units and application programs. Attention reader!
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