One of the key aspects of data communication is understanding your target audience and creating visuals that convey information in a captivating manner. Effective data communication involves using the right words to convey that information.

The basic definition of data communication is the transfer of information from one computer to another via a network or other medium. Information can range from a simple audio file to a text message. The medium used to transmit data could be wired or wireless. To be able to communicate they must have a means of connecting together. This is known as a channel or network.

Modern networks for data communication use different data transmission channels. There are three types of data transmission channels: simplex full-duplex and duplex. Simplex mode only allows information to flow in only one direction at a time and duplex mode permits both the receiver and sender to transmit simultaneously. Full-duplex mode works similarly to duplex, however it requires that the receiver and transmitter be synchronized to allow them to read the correct binary data bits in the signal being transmitted.

Information that is transmitted using a data communication channel can either be digital messages sent by a microprocessor or an analog signal (such as telephone calls or a video) that is digitalized by using pulse-code modulation. To ensure that the receiver gets the correct information, errors in the transmission of data must be detected and corrected. This is typically done using a combination sequence numbers and acknowledgement codes.