












n 
For
the most significant



digit
of BCD we have



n 
p=
0.2 of a 1, p=0.8 of a 0


n 
Applying
Shannon’s




formula
a 1 contributes




2.321
bits of information,




but
with a probability of




0.2
this contributes 0.464




bits



n 
Sum
of information for 0




and 1
is 0.721 bits



