merely on/off while triggers are usually analog) centrally placed start, select, and home buttons, and an internal motor to provide force feedback.
Some common additions to the standard pad include shoulder buttons (also called 'bumpers') and triggers placed along the edges of the pad (shoulder buttons are usually digital, i.e. The direction controller has traditionally been a four-way digital cross (also named a joypad, or alternatively a D-pad, and never called arrow keys), but most modern controllers additionally (or as a substitute) feature one or more analog sticks. Gamepads generally feature a set of buttons handled with the right thumb and a direction controller handled with the left. Shoulder buttons ('bumpers') and triggers on an Xbox 360 controller.
