octal numeration system
Học thuậtThân thiện
A computer scientist writes a number using the octal numeration system on a whiteboard.
Definition
- Noun:
- A positional numeral system using base eight: The octal numeration system is a method of representing numbers using only eight distinct symbols (typically 0 through 7). Each digit's value depends on its position, with each place representing a successive power of eight.
Usage
- The octal numeration system is primarily used in computing contexts, especially in systems where a grouping of three binary digits (bits) is convenient, as eight corresponds to 2³.
- It is a less common base system compared to the ubiquitous decimal (base-10) or the computing-standard hexadecimal (base-16) systems.
Examples
- Noun:
- In the octal numeration system, the decimal number 10 is written as 12.
- Early computer systems sometimes displayed memory addresses using the octal numeration system.
- Converting from binary to the octal numeration system is straightforward because three binary digits map directly to one octal digit.
Advanced Usage
- "Octal notation": Often used synonymously with "octal numeration system" to refer to the symbolic representation itself.
- The permission settings in Unix-like operating systems are frequently expressed in octal notation.
Variants and Related Words
- Octal (adj): Pertaining to or using the base-eight system.
- An octal number.
- Octal digit (n): Any of the eight symbols (0, 1, 2, 3, 4, 5, 6, 7) used in this system.
- Base-8 system: Another term for the octal numeration system.
Synonyms
- Base-8 system: A direct synonym describing the system by its radix.
- Octal system: A common shortened form.
Related Phrases
- Octal representation: The specific form a number takes when written in the octal system.
- Find the octal representation of the decimal value 64.
A computer scientist writes a number using the octal numeration system on a whiteboard.
Noun
- a positional system of numeration that uses octal digits and a radix of eight