Header section- used to synchronize to the beginning of
the packet. This consists of a row of 20 bit one’s followed by
a single bit zero. The long sequence of one’s gives the
receiver time to settle and the decoding software to
synchronize.
Address- consists of 8 bit data in the byte followed by a
single bit one and single bit zero. Receiver checks these bytes
to make sure its intended for this receiver.
Data- this is same as address, 8 bits followed by a single bit
one and a single bit zero.
Checksum- consists of 8 bits followed by a single bit one
and a single bit zero. This byte makes sure that data the data is
received correctly. If it fails data should be discarding.
Total of 52 bits to send just a 8 bits data byte. Two bytes
will take 62 bits or four bytes will take 82 bits.