خرید و دانلود تحقیق سیستم عامل به انگلیسی

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خرید و دانلود تحقیق سیستم عامل به انگلیسی

خرید و دانلود تحقیق سیستم عامل به انگلیسی

سیستم عامل به انگلیسی : مقدمه

An operating system (OS) is software, consisting of programs and data, that runs on computers, manages computer hardware resources, and provides common services for execution of various application software. The operating system is the most important type of system software in a computer system. Without an operating system, a user cannot run an application program on their computer, unless the application program is self booting.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between application programs and the computer hardware, although the application code is usually executed directly by the hardware and will frequently call the OS or be interrupted by it. Operating systems are found on almost any device that contains a computer—from cellular phones and video game consoles to supercomputers and web servers.

Examples of popular modern operating systems include BSD, Linux, Mac OS X, Microsoft Windows, and Unix.

Types

Real-time

A real-time operating system is a multitasking operating system that aims at executing real-time applications. Real-time operating systems often use specialized scheduling algorithms so that they can achieve a deterministic nature of behavior. The main objective of real-time operating systems is their quick and predictable response to events. They have an event-driven or time-sharing design and often aspects of both. An event-driven system switches between tasks based on their priorities or external events while time-sharing operating systems switch tasks based on clock interrupts.

Multi-user vs. Single-user

A multi-user operating system allows multiple users to access a computer system concurrently. Time-sharing system can be classified as multi-user systems as they enable a multiple user access to a computer through the sharing of time. Single-user operating systems, as opposed to a multi-user operating system, are usable by a single user at a time.

خرید و دانلود تحقیق سیستم عامل به انگلیسی

خرید و دانلود تحقیق سیستم عامل به انگلیسی

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22

نوع فایل

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کامپیوتر

گروه مورد استفاده

دانش آموزان, دانشجویان

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