Oh, if you insist.
[geek]
Imagine you had sixteen coins. How many different combinations of heads and tails are possible?
ANSWER: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 65536
Whoever programmed the number used two bytes of memory. Each byte has eight bits (on/off switches), so there are sixteen bits being used. This allows any number from 0 to 65535.
[/geek]