# octal

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Related to Base eight: Octal base

## octal

[′äkt·əl]
(mathematics)
Pertaining to the octal number system.

## octal

(mathematics)
Base 8. A number representation using the digits 0-7 only, with the right-most digit counting ones, the next counting multiples of 8, then 8^2 = 64, etc. For example, octal 177 is digital 127:

digit weight value 1 8^2 = 64 1* 64 = 64 7 8^1 = 8 7* 8 = 56 7 8^0 = 1 7* 1 = 7 --- 127

Octal system used to be widespread back when many computers used 6-bit bytes, as a 6-bit byte can be conveniently written as a two-digit octal number. Since nowadays a byte is almost always 8-bit long the octal system lost most of its appeal to the hexadecimal system.

For a brief discussion on the word `octal' see hexadecimal.

## octal

A numbering system that uses eight digits. It is used as a shorthand method for representing binary characters that use six-bits. Each three bits (half a character) is converted into a single octal digit. Okta is Greek for 8.

```Decimal  Binary   Octal
0        000      0
1        001      1
2        010      2
3        011      3
4        100      4
5        101      5
6        110      6
7        111      7
```
References in periodicals archive ?
These proposed acquisitions provide the perfect scale of enterprise for a conversion to a mail order facility, which with a little boost in technology and a few economies, can service a patient base eight to ten times larger and a provide a revenue base several multiples even higher," said Cox.
McCarthy has reached base eight times in three games, including Saturday's exhibition.
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Through Friday, the pair had combined to reach base eight times in 18 plate appearances and struck out only once.
Teammate Tom Crowther got on base eight straight times, walking five times, getting hit by a pitch and collecting two singles.

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