COM1100 -- Winter2000 -- Yuhong Yin
10
Binary
number to decimal number
n Use binary
expression:
ndn * 2 n + dn-1 * 2 n-1 + …+ d1 * 21 + d0 * 2 0
nwhere, dj
is one of the two binary digits
0 ~ 1
2i is the power of 2
of each digit dj that defines its positional significance, or
simply the power of that
digit.
n For example,
n (110010) = 1 * 25 + 1 * 24 + 1 * 21
= 32 + 16 + 2 = 50