
11.1 | Serial Communication Principles
Transferring data is what we mean when we use the word ‘communication’. Data is to be
sent from the source to the destination, and it is necessary for the source and destination
formats to be similar for compatibility between them to be ensured.
We have seen such data transfer in many contexts, and in all these cases, a num-
ber of bits are sent together, i.e., 8 bits, 16 bits or 32 bits. This is ‘parallel commu-
nication’. All the bits are sent and received together. Data transfer between registers
in a processor is done this way. This is fine as long as the source and the destination
are in close proximity ...