Epson 4100 manual Hexadecimal Number System

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.