Hexadecimal describes a base-16 number system. That is, it describes a
numbering system containing 16 sequential numbers as base units
(including 0) before adding a new position for the next number. (Note
that we're using "16" here as a decimal number to explain a number that
would be "10" in hexadecimal.) The hexadecimal numbers are 0-9 and then
use the letters A-F. We show the equivalence of binary, decimal, and
hexadecimal numbers in the table below.
