Final answer:
Serial transmission is a style of data transmission where bits are sent one after another along a single transmission line, ensuring efficient use of bandwidth and suitable for long-distance communication.
Step-by-step explanation:
In the context of data transmission, the term 'serial' refers to a style of transmission where the pulses representing bits follow one another along a single transmission line. This means that the bits are sent one after another in a sequential manner, rather than in parallel.
A common example of serial data transmission is the transfer of data through a serial communication port (e.g., USB or RS-232), where bits are sent one at a time over a single line.
Serial transmission allows for efficient use of the available bandwidth and is suitable for long-distance communication.