Data communication is defined as the exchange of data between two devices via a transmission medium. For effective data communication, a system must be in place using both hardware and software to allow delivery of data to the correct destination accurately and in a timely manner. A data communication system's effectiveness relies on its ability to deliver data to the intended recipient without errors and within the necessary time frame.

1. DATA COMMUNICATION
receiversender message

2. DEFINATION
 Defination:
 Data communication is the exchange of data
between two devices via some form of transmission
medium.
 For data communication to occur the
communicating devices must be part of a
communication system made up of a combination of
hardware and software.

3. Effectiveness of data communication system
depends on three fundamental
Characteristics
 DELIVERY: The system must delivered data to
correct defination.
 ACCURACY: The system must delivered data
accurately.
 TIMELINESS: The system must deliver data timely
manner.