Data Communication – The Lifeblood of Digital Networks


In our increasingly connected digital world data communication is the vital ingredient that connects us. Understanding how different methods of data transmission function is essential to designing efficient and reliable networks. Different methods determine how data is transferred.

Hardware in a data communication circuit can employ a variety to send data effectively. This includes desmultiplexing and multiplexing. These are processes that combine or separate signals to send them as a single composite signal. This increases bandwidth and lowers costs. Error detecting codes and signal amplifiers reduce the possibility of data corruption caused by noise or momentary electrical disturbances which can alter bits of information as they travel over the communication channel.

Data communications also come with an array (protocol) of rules that are adhered to by both the computers of the sender and receiver. These rules help ensure that the message is understood and accepted without error.

The sender is the device or computer that creates and sends out the message, which could be in the form of text, numbers images, sound or video. The receiver is the computer or device that receives the message that could be the exact same as the sender, or different. The transmission medium is the physical pathway between the sender and the receiver, which can be a wired medium, such as twisted pair wire fiber optic cable, or wireless like microwaves or radio waves.