What does data transmission mean?
Data transmission is the process of sending digital or analog data over a communications medium to one or more computing, network, communications, or electronic devices. It enables device transfer and communication in a point-to-point, point-to-multipoint, and multipoint-to-multipoint environment.
Data transmission is also referred to as digital transmission or digital communications.
Techopedia Explains Data Transmission
Data transmission can be analog and digital but is mostly reserved for sending and receiving digital data. It works when a device or equipment, such as a computer, intends to send a data object or a file to one or more recipient devices, such as a computer or a server. Digital data comes from the source device in the form of discrete signals or digital bit streams. These data streams/signals are placed on a communication medium, such as physical copper wires, wireless carriers, and optical fibers, to be routed to the destination/recipient device. In addition, each outgoing signal can be baseband or passband.
In addition to external communication, data transmission can also be carried out internally to a device. For example, random access memory (RAM) or hard drive that sends data to a processor is also a form of data transmission.