Xbox
Released in 2001, the Xbox control pad was the first controller made for the original Xbox. The Xbox controller features two analog sticks, a pressure-sensitive directional pad, two analog triggers, a Back button, a Start button, two accessory slots and six 8-bit analog action buttons (A/Green, B/Red, X/Blue, Y/Yellow, and Black and White buttons). The standard Xbox controller (originally nicknamed the "Fatty" and later the "Duke") was originally the controller bundled with Xbox systems for all territories except Japan.
Xbox One system software
The Xbox One was not backward compatible with either the original Xbox or the Xbox 360 console at launch, and Microsoft had admitted that attempts to use cloud streaming to allow Xbox 360 games to be played on Xbox One proved to be "problematic". However, during its E3 press conference on June 15, 2015, Microsoft announced plans to introduce Xbox 360 backward compatibility using the software method on the Xbox One. Supported Xbox 360 games are supposed to run within a software emulator provided by the updated system software, implementing both the hardware and software of the Xbox 360. Xbox One recording and broadcasting features are supported along with Xbox 360 multiplayer, achievements and cloud save access.