5 basic components of data communication

where the data originates

Device used to transmit data

Cables or Non-Cable

Device used to receive data

where the data will be place

The amount of data which can be transmitted on a medium over a fixed amount of time (second). It is measured on Bits per Second or Baud  

A measure of transmission speed. The number of bits (0 0r 1) which can be transmitted in a second.

Transmissions are broken up into smaller units or data transmissions called packets  

Transmission Direction - One direction Only