## Hexdecimal numbers are a base 16 numeral system.

Hexadecimal numerals are widely used by computer system designers and programmers because they provide a human-friendly representation of binary-coded values. Each hexadecimal digit represents four bits.

### Finger Counting

Finger binary is a system for counting and displaying binary numbers on the fingers of one or more hands. It is possible to count from 0 to 31 using the fingers of a single hand. In the binary number system, each numerical digit has two possible states(0 or 1) and each successive digit represents an increasing power of two.

Pinky | Ring | Middle | Index | Thumb | |
---|---|---|---|---|---|

Value | 1 | 2 | 4 | 8 | 16 |

For example, the number 10 is expressed by folding the index and ring finger, the number 20 is expressed by folding the thumb and the middle finger.

A way to look at this system is to consider the hand as an abacus, where the little finger has a value of 1, the ring finger has a value of 2, the middle finger has a value of 4, and the index has a value of 8. Numbers are made by adding the value of the pointed fingers.

### Verbal Counting

A | ha | 1A | hateen | A0 | haty | A00 | handred |
---|---|---|---|---|---|---|---|

B | be | 1B | beteen | B0 | bety | B00 | bendred |

C | ce | 1C | ceteen | C0 | cety | C00 | cendred |

D | de | 1D | deteen | D0 | dety | D00 | dendred |

E | he | 1E | heteen | E0 | hety | E00 | hendred |

F | fe | 1F | feteen | F0 | fety | F00 | fendred |

### Hexadecimal to Binary Table

You can find a larger table, the midi table and the ascii table.

0 | 0000 | 4 | 0100 | 8 | 1000 | C | 1100 |

1 | 0001 | 5 | 0101 | 9 | 1001 | D | 1101 |

2 | 0010 | 6 | 0110 | A | 1010 | E | 1110 |

3 | 0011 | 7 | 0111 | B | 1011 | F | 1111 |

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