Keyboard and Pedals
Just like a traditional piano, a digital piano features a keyboard. A digital piano's keyboard is weighted to simulate the action of a traditional piano and is velocity sensitive so that the volume of the sounds depends on how fast the keys are pressed. Many instruments now have a complex action incorporating actual hammers in order to better simulate the touch of a grand piano.
Many digital pianos, especially those that resemble an acoustic piano, have built-in pedals that function much as those on an acoustic piano.
Read more about this topic: Digital Piano