Nt1110 Module 1 Lab

In: Computers and Technology

Submitted By davidmalave14
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The Purpose and Functions of an Operating System
The operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.
For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes a system call to an OS function or be interrupted by it. Operating systems can be found on many devices that contain a computer—from cellular phones and video game consoles to supercomputers and web servers.
Examples of popular modern operating systems include Android, BSD, iOS, Linux, OS X, QNX, Microsoft Windows, Windows Phone, and IBM z/OS..
History
1. Windows - The first Windows system was released in 1985. Originally, it was just a graphical user interface on top of MS-DOS – a state of affairs that lasted until the release of Windows 95, when MS-DOS products were integrated into Windows. Windows 95 was a huge departure from the previous systems and was the first major step in Window’s transition from GUI to operating system. 2. Apple - The Apple Macintosh system is a little older than Windows, having first been released in 1984. From the start, it was an entirely graphical operating system, and from quite an early stage became popular among the earliest computer graphic designers. In 2005, Apple changed the design and structure of Mac OS, moving from…...

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