In our increasingly interconnected digital world, data communication is the vital ingredient that connects us. Understanding how different methods of data transmission work is essential to creating reliable and efficient networks. From the simplicity of simplex communications to the bidirectional nature of full duplex communications different methods determine the way data is sent and received.
To efficiently transmit data the hardware in a data communication circuit can use a variety techniques like multiplexing and demultiplexing, which are processes that combine and separate signals into single composite ones for transmission and then back into individual components. This increases bandwidth and decreases costs. Error detecting code and signal amplifiers also minimize data corruption from electric disturbances, or even momentary electrical noises that could alter bits of data when they travel through an electronic communication channel.
Data communications also have the following set (protocol) of rules which are followed by the computers used by the sender and the receiver. These rules help ensure that the message is understood and accepted without error.
The sender is the computer or device that generates and transmits the message, which could be in the form of numbers, text pictures, sounds, or video. The device or computer that receives the message could be different from the one that sent it. The transmission medium is the physical way from the sender to the receiver, which can be a wired media such as twisted pair wire fiber optic cable or wireless like microwaves or radio waves.
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