126 Universal Control Commands
HEXADECIMAL NUMBER SYSTEM
The hexadecimal (hex) number system is used in the computer industry
because its relationship to the binary number system allows convenient
notation. In the hexadecimal (base sixteen) number system, counts from
zero (0) to fifteen (15) and then starts over again. The sixteen digits are
represented by the numbers zero (0) through nine (9) and the letters A
through F. All other numbers are represented using these sixteen
characters.
The 256 unique data bytes in the binary system can be identified with
either decimal or hexadecimal numbers. For example, the data byte with
pattern 00001110 can be identified by decimal number 14, or equally well,
by hexadecimal number 0E.
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