Which term describes the numbering system with base 8?

Which term describes the numbering system with base 8?

• A. Binary Number System
• B. Decimal Number System
• C. Octal Number System
• D. Hexadecimal Number System

Answer: (C)

Base systems describe how numbers are represented using a set of digits and powers of the base. When the base is eight, the digits used are 0 through 7, and each place value is a power of eight. This system is called the octal number system. It’s convenient in computing because three binary digits map neatly to one octal digit (000 to 111 corresponds to 0 through 7), which is why octal appeared in older computing contexts. To contrast, binary uses digits 0 and 1, decimal uses 0–9, and hexadecimal uses 0–9 plus A–F. So the term for the numbering system with base 8 is octal.

Base systems describe how numbers are represented using a set of digits and powers of the base. When the base is eight, the digits used are 0 through 7, and each place value is a power of eight. This system is called the octal number system. It’s convenient in computing because three binary digits map neatly to one octal digit (000 to 111 corresponds to 0 through 7), which is why octal appeared in older computing contexts. To contrast, binary uses digits 0 and 1, decimal uses 0–9, and hexadecimal uses 0–9 plus A–F. So the term for the numbering system with base 8 is octal.