The Basics of Data Communication

Data communication is the primary element that connects us to the devices and services that we depend on in our interconnected digital world. It encompasses a range of techniques and methods that control the way information is transmitted from one location to another. Understanding how this works can help us create reliable and efficient networks that deliver the benefits of greater connectivity like improved business efficiencies and productivity as well as advancements in automation.

Data communication is the transfer of data between computers through a medium or channel. This could be accomplished via the wire cable, radio frequency, satellite signal or wirelessly. The person or device that transmits data is the sender and the computer that receives the data is referred to as the receiver. In a network for data communication, more than two computers may be involved in the process of communication.

Multiplexing and demultiplexing are effective technology for communication that allows multiple signals to be transmitted across a medium simultaneously, optimizing the use of bandwidth and reducing costs. Both of these methods require specialized equipment that can combine and separate signals. This function is often performed by custom integrated circuits which are present in a range of communication products such as phones, computers, and printers.

The mode of data communication that allows for simultaneous two-way communication between the same pair of devices is known as full-duplex communication. This type of communication is more complex than simplex communication because it requires the ability of sending and receiving data at the same time.

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