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ANDROID -- POPULARITY

We all know about Android. We all know that is very very popular. But does anyone know how it has become popular ?? Some may know, but there are many of us who don't know. So, today I am going to tell you how it has become so popular. Android has become a very popular operating system for mobile phones because it has a large number of developers, also called apps or applications.
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VARIANTS OF WINDOWS

Different variants of Windows are --- 1) Windows 95 2) Windows 98 3) Windows ME(Millennium Edition) 4) Windows XP 5)Windows Vista 6)Windows 7 7) Windows 8 8) Windows 10
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HOW WINDOWS GOT ITS NAME

Windows is so called because the interface is made up of rectangular boxes called windows
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Multi User Operating System

Multi user operating systems allow more than one person to work on a computer at a time. Example: Unix, Linux.
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Single User Single Task Operating System

Single user operating systems allow only one person to work on a computer at a time. Example: MS Windows, MS Dos, etc.
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FUNCTIONS OF AN OPERATING SYSTEM

Functions of an Operating System are --- 1) Process management 2) Memory management 3) File management 4) Device management
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TYPES OF OPERATING SYSTEMS(OS)

The different types of Operating Systems(OS) are: 1) Real Time Operating System(RTOS) 2) Single User, Multi Tasking 3) Single User, Single Task 4) Multi User
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