Ict revision

Ict revision

1. modes of transmission

   • simplex
     • the device can only operate one way
       • examples T.V and basic printers
   • Half-duplex
     • Data can be sent both ways but only one way at a time
   • Full duplex
     • Data an be transmitted both ways at the same

2. GPS-global positioning system

   • needs to access at least three satellites in a triangularation

3. ubiquitous computing

   • more things connecting to the internet