compact disc player
Device using a laser beam to play back sounds recorded on a compact disc (CD).
remote control sensor 
Device that receives infrared signals emitted by a remote control so that certain functions can be operated from a distance.
disc compartment control 
Button that opens and closes the disc tray.
disc compartment 
Compartment that contains the tray into which discs are inserted for playback.
track number 
Liquid crystal display that shows the number of the track being played.
indicators 
Indicator lights showing the operations carried out or the functions selected.