Number systems
In mathematics and digital electronics, a binary number is a number expressed in the binary numeral system or base-2 numeral system which represents numeric values using two different symbols: typically 0 (zero) and 1 (one).
The decimal numeral system (also called base-ten and occasionally denary) has ten as its base, which, in decimal, is written 10, as is the base in every positional numeral system.
In mathematics and digital electronics, a hexadecimal number (also base 16, or hex) is a number expressed in the hexadeximal numeral system - a positional numeral system with a radix, or base, of 16.
| Decimal number (positive) | Hexadecimal number |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | A |
| 11 | B |
| 12 | C |
| 13 | D |
| 14 | E |
| 15 | F |
| 16 | 10 |
| 32 | 20 |
| 64 | 40 |
| 128 | 80 |
| 256 | 100 |