Data communication is essential to our digital world. It connects us to the devices and services that we rely on. It encompasses a range of methods and media that dictate the way information is transmitted from one end to the other. Understanding how this works helps us design efficient and reliable networks that deliver the benefits of greater connectivity, including improved efficiency in business, higher productivity, and improvements in automation.
Data communication is the transfer of data between computers over channels or medium. This can happen via wire cables, radio frequency, satellite signal or wirelessly. A device or individual who transmits data is called the sender, while the computer that receives the data is referred to as the receiver. In a data communications network, more than two computers could be involved in the communication process.
Multiplexing and Demultiplexing are two communication techniques that optimize bandwidth use and reduce costs. Both of these processes require special hardware that is capable of combining and separate these signals. This function is typically performed by custom integrated circuits, which are present in a variety of communication devices such as computers, cell phone, and printers.
Full-duplex communication is a type of data transmission that permits simultaneous two-way communication within two devices. This mode is more complicated than simplex transmission since it requires the ability to send and receive data simultaneously.
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