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Operating Systems

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Functions of Operating System
Last Updated: 27 September 2023
An Operating System acts as a communication bridge (interface) between the user and computer hardware. The purpose of an operating system is to provide a platform on which...read more
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Operating Systems
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Types of Operating Systems
Last Updated: 17 May 2023
Pre-Requisite: What is an Operating System?An Operating System performs all the basic tasks like managing files, processes, and memory. Thus operating system acts as the m...read more
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Introduction of Operating System - Set 1
Last Updated: 26 July 2023
An operating system acts as an intermediary between the user of a computer and computer hardware. The purpose of an operating system is to provide an environment in which ...read more
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Semaphores in Process Synchronization
Last Updated: 27 September 2023
Semaphores are just normal variables used to coordinate the activities of multiple processes in a computer system. They are used to enforce mutual exclusion, avoid race co...read more
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Operating Systems
GATE CS
Program for Round Robin Scheduling for the same Arrival time
Last Updated: 20 September 2023
Round Robin is a CPU scheduling algorithm where each process is assigned a fixed time slot in a cyclic way. It is basically the preemptive version of First come First Serv...read more
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cpu-scheduling
Operating Systems
Program for FCFS CPU Scheduling | Set 1
Last Updated: 21 July 2023
Given n processes with their burst times, the task is to find average waiting time and average turn around time using FCFS scheduling algorithm.First in, first out (FIFO),...read more
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Operating Systems
Inter Process Communication (IPC)
Last Updated: 25 July 2023
A process can be of two types:Independent process.Co-operating process.An independent process is not affected by the execution of other processes while a co-operating proc...read more
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Banker's Algorithm in Operating System
Last Updated: 27 September 2023
The banker’s algorithm is a resource allocation and deadlock avoidance algorithm that tests for safety by simulating the allocation for the predetermined maximum possible ...read more
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Operating Systems
Process Synchronization
Paging in Operating System
Last Updated: 13 July 2023
Paging is a memory management scheme that eliminates the need for a contiguous allocation of physical memory. The process of retrieving processes in the form of pages from...read more
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memory-management
Operating Systems
Cache Memory in Computer Organization
Last Updated: 25 April 2023
Pre-Requisite: Computer MemoryCache Memory is a special very high-speed memory. The cache is a smaller and faster memory that stores copies of the data from frequently use...read more
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Operating Systems
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Computer Organization & Architecture
Page Replacement Algorithms in Operating Systems
Last Updated: 19 June 2023
In an operating system that uses paging for memory management, a page replacement algorithm is needed to decide which page needs to be replaced when a new page comes in.Pa...read more
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memory-management
Operating Systems
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Introduction of Deadlock in Operating System
Last Updated: 19 July 2023
A process in operating system uses resources in the following way.Requests a resourceUse the resourceReleases the resourceA deadlock is a situation where a set of processe...read more
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Operating Systems
Deadlocks
CPU Scheduling in Operating Systems
Last Updated: 01 May 2023
Scheduling of processes/work is done to finish the work on time. CPU Scheduling is a process that allows one process to use the CPU while another process is delayed (in st...read more
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cpu-scheduling
Operating Systems
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Complete Tutorial on LRU Cache with Implementations
Last Updated: 29 August 2023
What is LRU Cache?Cache replacement algorithms are efficiently designed to replace the cache when the space is full. The Least Recently Used (LRU) is one of those algorith...read more
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