Android OS: Google DVM and Virtual machines

Published in LinuxForYou, Jun 2011

Abstract

With the outburst of heterogeneous systems, the need for a scalable software system is very much required without compromising the cost of development and maintenance of the software. Virtual machine (VM) provides abstraction from the heterogeneity and presents a low cost and scalable software development environment. VM based modern programming languages like Java is the speaking example of this.

 In this article, we will try to understand the fundamental concepts of a VM by taking the example of Dalvik VM – one of the critical components of Google’s Android Operating System software stack.

The complete article is available here

>Torrent: Demystified

>What is a torrent?

A torrent is like a broker between a customer and a seller. It works in a peer-to-peer setup that means a true democracy; all are equal, no master-no slave.

So you need to download a classic movie, which may be on a computer(s), located anywhere across the globe.

How would you know where is it?

Torrent comes to help you here. You google for a torrent of this movie. Download the torrent and voila!.

Torrent has three primary components:

a) Seeders: People that have a copy of the movie you want
b) Leechers: That’s you!
c) Torrent file : It has information about seeders and leechers.

While you are downloading your movie, torrent share the downloaded part with anyone else interested in downloading the same movie. So effectively every leecher becomes a seeder. Now you are even! Hail Democracy!!