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Byte
From NetSec
Revision as of 06:39, 18 November 2010 by TriciaNoonan (Talk | contribs)
A byte represents 8 bits of data. A bit of data is simply a 1 or 0. Bytes are typically described by two hexadecimal characters.
Their values go 0-9 and A-F. A represents ten. So when you see FF:
F is fifteen. So you multiply 15 * 16 because it is in the 16's placeholder. This gives you the value 240. You add that to the second F (15) to get 255.
This is the highest value of a byte. As such a byte can only hold integers 0-255, which is 256 values because it starts at zero.
Reference
0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
