3. Serial Transmission
In serial transmission one bit follows another, so we
need only one communication channel instead of n to
send n bits.
The advantage of serial over parallel transmission is
that with only one communication channel.
Serial transmission reduces the cost of transmission
over parallel roughly by a factor of n.
Communication within devices is parallel, conversion
devices are required at the interface between the
sender(parallel-to-serial) and receiver (serial-to-parallel).
7. ASYNCHRONOUS
With asynchronous communication, the transmitter
and receiver do not share a common clock.
TRANSMITTER RECEIVER
Shifts the parallel data onto Extracts the data using
the serial line using its own its own clock.
clock.
Also adds the start, stop and Convert the serial back
parity check bits. to the parallel form after
stripping off the start, stop
and parity bits.
8. SYNCHRONOUS
In the synchronous mode, the transmitter and
receiver share a common clock.
TRANSMITTER RECIEVER
Shifts the data onto the Extracts the data using
serial line using its own the clock provided by
clock. the transmitter.
No start, stop, or parity Convert the serial data
bits added to data. back to the parallel
form.
