The original Xbox controller doesn't work on the 360.
The Xbox 360 controller will not work on the Xbox one. You will have to use an Xbox One controller.
No.
Yes you can.
no
There is no way to use your existing Xbox 360 controller on your PC. However, Microsoft have released a PC controller which is a Xbox controller.
The black elite controller will work on any model of xbox 360
Yes.
No
Yes, if you install the files required for the Xbox 360 controller to work on your computer and configure your controller settings on the emulator.
You can now buy an Xbox 360 controller just for PC. You cant use any existing controller for the Xbox 360 you have because its only for Xbox.
You have to get the Xbox 360 (PC) controller which is still the same price of an Xbox 360 (360) controller.