Bibliography
History
Impact of Email
Future
Instant Messaging
What Is It
Different Types
Impact
Cell Phones
History
www.howstuffworks.com/inside-cell-phone
www.ehso.com/ehshome/cellphonetect.
www.cellphonecarriers.com/furture-cell
www.cellphonecarriers.com/how-cell-phone-works.
www.cellphonecarriers.com/cell-phone-history.
This is the symbol that represents at when writing an adress.