Data communication is vital to our ever-growing digital world. Understanding how different modes of data transmission function is key to constructing reliable and efficient networks. Different methods determine how data is transmitted.
To transfer data efficiently hardware in a communication circuit employs a variety of methods 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 maximizes bandwidth utilization and lowers costs. Error detecting codes and signal amplifiers also minimize the chance of data corruption due to electromagnetic disturbances or other noise that can alter bits of data when they travel through an electronic communication channel.
Data communications also have rules (protocol) that are followed by both the sender and receiver computers. These rules help ensure that the message is read and accepted without error.
The sender is the computer or device see it here that generates and transmits the message, which could be in the form of text, numbers images, sound, or video. The computer or device which receives a message could be the same or different from the sender. The transmission medium is the physical way between the sender and the receiver, which can be a wired media such as twisted pair wire or fiber optic cable, or wireless, such as lasers, microwaves, radio waves.