How do players and computers read CD’s and DVD’s?

Question

I’m just wondering physically how is it possible? Why is it that if I wanna pick one song from the CD the player ‘knows’ where the song I want is?

In: Technology

Answer 1

Little tiny reflective/non reflective dots represent 1’s and 0’s

The drives laser shoots at the disc and it being bounced back/not bounces back gets turned into binary