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Context Switching in Operating System



Posted by:shreyak
Date:2018-03-28 07:18:54

Context Switch

A context switch is the mechanism to store and restore the state or context of a CPU in Process Control block so that a process execution can be resumed from the same point at a later time. Using this technique, a context switcher enables multiple processes to share a single CPU. Context switching is an essential part of a multitasking operating system features.


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One to one model


Posted by:shreyak
Date:2018-03-28 07:36:55

One to One Model

There is one-to-one relationship of user-level thread to the kernel-level thread. This model provides more concurrency than the many-to-one model. It also allows another thread to run when a thread makes a blocking system call. It supports multiple threads to execute in parallel on microprocessors.

Disadvantage of this model is that creating us...


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education


Posted by:peter100
Date:2018-05-10 06:58:02

Education is a life empowering system

 

...


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Operating System Scheduling algorithms


Posted by:oluwole007
Date:2018-05-14 01:26:40

Operating System Scheduling algorithms

A Process Scheduler schedules different processes to be assigned to the CPU based on particular scheduling algorithms. There are six popular process scheduling algorithms which we are going to discuss in this chapter −


Encoding 222 new


Posted by:shreyak
Date:2018-03-28 12:32:16

Digital-to-Digital Conversion

This section explains how to convert digital data into digital signals. It can be done in two ways, line coding and block coding. For all communications, line coding is necessary whereas block coding is optional.

Line Coding


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Cool money



Posted by:fryokodjovi44
Date:2018-04-29 23:22:51

Cool money 

...


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Pokemon Go



Posted by:shreyak
Date:2018-03-29 08:12:16

About Pokémon GO

Travel between the real world and the virtual world of Pokémon with Pokémon GO for iPhone and Android devices. With Pokémon GO, you’ll discover Pokémon in a whole new world—your own! Pokémon GO gives you the chance to explore real locations and search far an...


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About mr noel



Posted by:conquer190
Date:2018-05-16 10:15:04

He was born in 2000 His cute He finished secondary school last year...


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AKE COOL NAIRA



Posted by:johnnie
Date:2018-05-17 01:30:07

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Introduction to Digital Communication


Posted by:ocattech
Date:2018-05-20 21:36:42

 
Introduction to Digital Communication

In the design of large and complex digital systems, it is often necessary to have one device communicate digital information to and from other devices. One advantage of digital information is that it tends to be far more resistant to transmitted and interpreted errors than information symbolized in an analog medium. This accounts for the clarity of digitally-encoded telephone connections, com...


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