The Operating System (OS): Functions and work


An operating system is the most important software that runs on a computer. It manages the computer's memory, processes, and all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer's language. Without an operating system, a computer is useless..

The operating system's Job

Your computer's operating system(OS) manages all of the software and hardware on the computer. Most of the time, there are many different computer programs running at the same time, and they all need to access your computer's central processing unit (CPU), memory, andstorage. The operating system coordinates all of this to make sure each program gets what it needs.

Microsoft Windows

Microsoft created the Windows operating system in the mid-1980s. Over the years, there have been many different versions of Windows, but the most recent ones are Windows 8 (released in 2012),Windows 7 (2009), andWindows Vista (2007). Windows comes preloaded on most new PCs, which helps to make it the most popular operating system in the world.
If you're buying a new computer or are upgrading to a newer version of Windows, you can choose from several different editions of Windows, such as Home Premium, Professional, and Ultimate. You may need to do some research to decide which edition is right for you.

Mac OS X

Mac OS is a line of operating systems created by Apple. It comes preloaded on all new Mac in tosh computers, or Macs. All of the recent versions are known as OS X (pronounced O-S Ten), and the specific versions include Yosemite (released in 2014), Mavericks (2013),Mountain Lion (2012), Lion (2011), andSnow Leopard (2009). Apple also offers a version called Mac OS X Server, which is designed to be run on servers.

Linux

Linux (pronouncedLINN-ux) is a family of open-source operating systems, which means they can be modified and distributed by anyone around the world. This is different from proprietary software like Windows, which can only be modified by the company that owns it (Microsoft). The advantages of Linux are that it is free, and there are many different distributions—or versions—you can choose from. Each distribution has a different look and feel, and the most popular ones include Ubuntu, Mint, and Fedora

Operating systems for mobile devices

The operating systems we've been talking about were designed to run on desktop or laptop computers. Mobile devices such as phones,tablet computers, and MP3 players are different from desktop and laptop computers, so they run operating systems that are designed specifically for mobile devices. Examples of mobile operating systems include Apple iOS,Windows Phone, and Google Android.
Operating systems for mobile devices generally aren't as fully featured as those made for desktop and laptop computers, and they aren't able to run all of the same software. However, you can still do a lot of things with them, like watch movies, browse the Web, manage your calendar, and play games.

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