The Basics of Data Communication

Data communication is the key element that connects us with the devices and services that we depend on in our interconnected digital world. It is comprised of a variety of techniques and methods that control the way information is transmitted from one location to another. Understanding how it works enables us to design an efficient and reliable network that delivers the benefits of greater connection for increased efficiency and productivity in business, and innovations within automation.

Data communication is the transfer of data between computers via the medium or channel. This could be accomplished via cable or satellite signal, radio frequency or wirelessly. The sender is the person or device transmitting data and the receiver is the device that receives the data. In a network of data communication more than two computers can be involved in the process of communication.

Multiplexing and demultiplexing are both communication techniques that optimize bandwidth use and reduce costs. Both processes require specific equipment that can combine and then separate signals. This function is often performed by custom integrated circuits, which are found in a wide variety of communication devices including cell phones, computers and printers.

Full-duplex is the method of data transmission that permits simultaneous two-way communication between two devices. This mode is more complicated than simplex transmission as it requires sending and receiving data at the same time.

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