Decimal vs Hexadecimal

The decimal system uses a base of ten. This means that ten different symbols are used to represent the ten consecutive integers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. When you want to count past the last symbol, you start to combine symbols.

DEC	0	1	2	3	4	5	6	7	8	9
	10	11	12	13	14	15	16	17	18	19

The same applies to the hexadecimal numbering system except it uses 16 symbols. These are the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and the letters A, B, C, D, E and F. The table below shows how to combine the symbols to create bigger numbers.

DEC	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
HEX	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F	10	11	12	13	14	15	16	17	18	19	1A	1B	1C	1D	1E	1F

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