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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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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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Approval


Posted by:shreyak
Date:2018-04-14 15:31:49

this post has to be approved

...


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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 and wide for Pokémon. ...


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