Sony PSP

Sony PSP
The Sony PlayStation Portable (officially Sony PSP) is a handheld game console produced by Sony Computer Entertainment. The Sony PSP was first announced during E³ 2003 and was unveiled on May 11, 2004 at a Sony press conference during E³ 2004. It was released in Japan on December 12, 2004, the United States on March 24, 2005 and the European Union and Australia on September 1, 2005.

Despite its movie and music playback capabilities, the PlayStation Portable has primarily gaming-oriented controls (as opposed to the controls typical to television remotes or MP3 players): two shoulder buttons (triggers), the iconic PlayStation face buttons start and select buttons, a digital 8-directional pad, and an analog input. There is also a row of secondary controls along the underside of the screen, for controlling volume, music settings (either switching the audio off and on in games or selecting different equalizer presets in the OS), screen brightness, accessing the system’s main menu, as well as the standard Start and Select buttons.

The Sony PSP’s analog input, often called the “analog nub,” is not a traditional analog stick, but rather a sliding flat panel. It is used in the same way as the analog thumb stick of a modern console.

Source:WikiPedia