COM1100 -- Winter2000 -- Yuhong Yin
9
Hexadecimal number expression
nA hexadecimal number can thus be expressed as:
ndn * 16 n + dn-1 * 16 n-1 + …+ d1 * 161 + d0 * 16 0 
nwhere, dj is one of the 16 hexadecimal digits  0 ~ 9 and A ~ F
n 16i is the power of 16 of each digit dj that defines its positional significance, or simply the power of that digit.
nFor example,
n( 3DA )16   = 3 * 162 + 13 * 161 + 10 * 160
n                 =  3 * 256 + 208 + 10
n           =  768 + 208 +10
n                 =  986
nWe will use ( 3DA )16 to represent a hexadecimal number.