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4. What are Social networks and give some examples that were presented in the class? Type at least 6 examples of inventions from Google. In some words tell what is the history of the optical storage devices. In some words explain briefly Pixars' history.

Social networks are webpages which are linked through internet and allows many computers and users to communicate with each other. some examples are: Twitter, Facebook, hi5, myspace and sixdegress. The first social network was 6degrees.com. myspace appeared in 2003, invented by tom anderson, this social network is very importante for thwe music industry because the page promotes artists that are not already known or that they are alrready known, also myspce sell concert tickets and anounse concert dates. facebook that now a days is globaly used was invented by to Hardvard student, first facebook was only allowed for the unisversity students but then this social network was accesible for worldwide users.

Google (1977) inventions: (creators: larry pages) 1. The google searcher: was the first invention used to find information. You type a word in google and it will look for the webpages that mentions that word more times. It is very useful to find especific information. 2. Google earth: It was used to see the world in the compuer (cities, streets, important places, etc). Then they made an assosiation with the NASA to include the moon and mars in google earth. 3. Gmail. Was created to recieve documents in your mail but it had more memory, it started with one Gb. than the other webpages as hotmail, it was really useful for big documents and ypu could send information with out trouble. 4. Youtube was boought in 2004: It id a webpage used for seeing videos, mainly. It has become very popular because it has a lots. , google chrome (internet conexion), Gmail, nexus 1 (cellphone), youtube, google computer 5.Google maps, Google docs-which work as microsoft 6.TG1 MOBILE is the celphone that will be the competition of the iphone created by apple.

Optical storage devices started as a way to save information (image, files, videos) and have develop greater capacity. now a days there are blue-rays whcih is a technology that permitts you to save or store a lot of information.

Steves Jobs purcharse lucasfilms by $10,000,000, pixar develop thanks to the technology use by lucasfilms, pixar started as a company that made commercials basically, but through time they made lots of movies (toy story 1, toy story 2, wall-e, bugs, monsters inc) The toy sotry movies were the ones which make pixar to succeed becuase they gain approximatele 384 millions of dollars and for the second one $454 millions. Pixar teamed up with walt disney this helped to the grown of pixars company.They joined and made better technology and more creative films. Pixar is working now a days with the movie toy story 3. Also in 2006 Cars was created and in 2007 Ratatoille appear in cimemas. Almost all of their movies have achieve at least 2 world wide awards.