By Kaitlyn,Araya and Eric
If someone speaks into the recording sound box while turning the hand crank, then it records the audio spoken. When someone speaks into the recording box, the recording stylus presses against the tinfoil cover of a rotating cylinder and that's how they used to record audio. Someone could play it back by turning the crank while pressing another stylus against the same tinfoil, then it plays the recording. Phonographs became less popular when CDs were produced in the 1980s. This is important today because it allowed us to build off of it and create better products that are easier to use.