A common misconception is that computer bytes and bits follow the metric system. It’s an easy mistake to make, as they use the same terminology and the results are somewhat close, but computers use base 2 while the metric system uses base 10.
In computer terminology:
1 Kilo (K)= 2^10 = 1,024
1 Mega (M)= 2^20 = 1,048,576
1 Giga (G) = 2^30 = 1,073,741,824
1 Tera (T) = 2^40 = 1,099,511,627,776
© 2010 – 2012, Within this mind. All rights reserved.
on 
on 
on