 This growth in communication technology has revolutions the way that businesses work and keep in touch with staff and customers

 Phone  Sign language  Letter   Facebook  sonar  Psn  Faical expression  Flare  Smoke signal  Languages  Morse code  Matrix  tadoma

 When computers where first developed they were made for an single user.  At home your computer might be connected to its own printer scanner. A computer that is not connected to a network is known as a stand alone  In a school or an office it would be very expensive to have a printer for each computer. A network can allow many computers to connect to the same printer.  A network is a connection of two or more devices connected by wireless.

 Local Area Network (LAN)  Wide Area Network (WAN)  The internet  Intranet  Extranet  Virtual Private Network (VPN)

 A group of devices network that share same wifi within a building. A network system that is connected to the (LAN) can also be independent.  To do this it most have access to