PlayStation 1 is released on December 3, 1994. It is the first dual hand held game device of PlayStation series. Then a special black PlayStation was released named Net Yaroze. Psone a smaller version of PlayStation 1 is introduced along side PlayStation 2.103 million units of PlayStation 1 and psone are sold. PlayStation and psone are the fifth generation video game consoles.PlayStation 32 is released in 2000 and it is the sixth generation of video game consoles. It is the most sold and successful video game home console in the world. 155 million consoles are sold by the end of December 2012. PlayStation 2 is the best selling video game home console of all time up-to now. The production of PlayStation 2 came to a halt in December 2012 and still many people own a PlayStation 2. PlayStation 3 is released in November 2006 and is the seventh generation gaming console. It has sold 80 million units by the end of November 2013. PlayStation 4 is released in February 2013 and is the latest gaming console from Sony and is the eight generation video game console. X86 architecture is introduced in PlayStation 4. With an app you can change your mobile display into secondary screen for gaming in PS4.