Optical Drives

In a computer in order to use discs you have to have a disc drive, an optical disc drive allows for the reading of a disc. This works by using lasers to read dips or bumps on a discs track. one is a 1 and the other is 0, sound is translated based on the order of 1s and 0s. If the drive is read/write then the laser is able to etch dips and bumps onto the disc with the laser. sometimes the laser can get damaged or dirty, this will either require a change of disc drive, a change to the laser or to clean the laser.