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01-11-2017, 10:52 PM

hi am tarishi i would like to get details on rnsit notes operating system notes 10ec65

jaseela123d · 06-11-2017, 01:23 PM

An operating system (OS) is a system software that manages the hardware and software resources of the computer and provides common services for computer programs. All computer programs excluding firmware require an operating system to function. Timeshare operating systems schedule tasks for efficient use of the system and may also include accounting software for the 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 hardware, although the application code is usually executed directly by the hardware and frequently calls the system to a function. of the SO or is interrupted by it. Operating systems are found in many devices that contain a computer, from cell phones and game consoles to web servers and supercomputers.

The dominant desktop operating system is Microsoft Windows with a market share of around 83.3%. MacOS by Apple Inc. ranks second (11.2%), and Linux varieties are collectively in third place (1.55%). In the mobile sector (smart phone and tablet combination), according to data from the third quarter of 2016, Android by Google dominates with 87.5 percent and a growth rate of 10.3 percent per year, followed by Apple's iOS with 12.1 percent. One hundred and one annual decrease in the market share of 5.2 percent, while other operating systems account for only 0.3 percent. Linux distributions are dominant in the server and supercomputing sectors. There are other specialized classes of operating systems, such as integrated systems and in real time, for many applications.

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