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OPERATING SYSTEM (important functions (Memory Management, Processor…
OPERATING SYSTEM 
MEANS .
Operating computer is the most important software that runs on a computer . It control the memory needed for computer processes , manages disk space , controls pripheral devices, and allows you to communicate with the computer without knowing exactly how a computer work
OPERATING SYSTEM TYPES
GUI - Short for Graphical User Interface, a GUI operating system contains graphics and icons and is commonly navigated by using a computer mouse. Examples of operating systems that would fall into this category are:
Linux
Unix
Windows 2000
Multi-user - A multi-user operating system allows for multiple users to use the same computer at the same time and different times.Examples of operating systems that would fall into this category are:
Linux
Unix
Windows 2000
Multiprocessing - An operating system capable of supporting and utilizing more than one computer processor. Examples of operating systems that would fall into this category are:
Linux
Unix
Windows XP
Multitasking - An operating system that is capable of allowing multiple software processes to run at the same time. Examples of operating systems that would fall into this category are:
Linux
Unix
Windows 8
Multithreading - Operating systems that allow different parts of a software program to run concurrently. Examples of operating systems that would fall into this category are:
Linux
Unix
Windows XP
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 10 (released in 2015), Windows 8 (2012), Windows 7 (2009), and Windows Vista (2007)
Mac OS X
Mac OS is a line of operating systems created by Apple. It comes preloaded on all new Macintosh computers, or Macs. All of the recent versions are known as OS X (pronounced O-S Ten), and the specific versions include El Capitan (released in 2015), Yosemite (2014), Mavericks (2013), Mountain Lion (2012), and Lion (2011).
LINUX
Linux (pronounced LINN-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. The advantages of Linux are that it is free, and there are many different distributions—or versions
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