There are mainly two types of data transmissions in
computers:
Parallel Transmission and Serial Transmission
Parallel Data Transmission:
In this method, groups of bits are sent simultaneously over
multiple wires.
It is unidirectional ie the data travels in one direction
only
Each bit is transmitted over a separate line.
Usually this is the major form of data transmission internally
in computers.
This method of data transmission is fast.
Serial Data Transmission
In this method of data transmission,data is sent in the form
of one bit at a time.
The bits are sent sequentially.
This form of data transmission is slower than parallel data
transmission.
An example of data transmission of this type is seen in telephone lines.
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