Similar to the decimal system, after the base of 16 symbols has been used, the appropriate extra digit is added and the order of numbers starts over. So instead of a decimal symbol of 10, hexadecimal uses an A, and so on and so forth until we get to the decimal of 15 which is notated as F. The overall difference is, 16 digits are available instead of the 10 digits available to use to notate the value of a number. The hexadecimal, or base-16, system was created to emulate some of the same properties of the common decimal system. For example, the number 423,004 uses twice as much digits as the number 961. With only 10 digits, extra digits need to be used at certain intervals to correctly notate a number. Most people are familiar with the decimal, or base-10, system of numbers (all possible numbers can be notated using the 10 digits, 0,1,2,3,4,5,6,7,8,9).
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