How to store information?

How are waves used to store information?

• Hi there. Im writing a physics paper on different methods of storing information electronically. I've also been asked to explain how waves are used to store information in an ...show more

• Answer:

  I'm tempted to say you can't store waves but that's not completely true. Waves are used to communicate digital information and for that you need to look at QAM other digital modulation methods. http://en.wikipedia.org/wiki/QAM http://en.wikipedia.org/wiki/Cellular_network To store digital information, flash memory (including USB drives, mp3 players and cell phones) uses floating gate semiconductors. http://en.wikipedia.org/wiki/Flash_memory The other digital storage technologies are magnetic and optical, both of which use some kind of run length encoding at the lowest level, or a variation called group codes. http://en.wikipedia.org/wiki/Run-length_encoding http://en.wikipedia.org/wiki/Group_code_recording