The document summarizes the evolution of PlayStation gaming consoles over three generations. The original PlayStation 1, released in 1994, could only play games and audio CDs without internet or USB connectivity. The PlayStation 2, released in 2000, added DVD playback, online connectivity, and backwards compatibility with PlayStation 1 games. The most recent PlayStation 3, released in 2007, featured wireless motion controllers, improved graphics, media player functionality that also enabled it to serve as a Blu-ray player, and USB ports for connecting additional devices.