octal

[ ok-tl ]

adjective

Also octonary. of or relating to the number system with base 8, employing the numerals 0 through 7.
relating to or encoded in an octal system, especially for use by a digital computer.

(of an electronic device) having eight pins in its base for electrical connections.

noun

Origin of octal

First recorded in 1935–40; oct- + -al¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Memory registers 1-777 (octal) are available for use as normal memory registers if they are not being used as index registers.
Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) | Digital Equipment Corporation
The contents of octal digits 0-5 of the index register location are unaffected by this instruction.
Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) | Digital Equipment Corporation
This instruction will rotate the bits of the Accumulator right N positions, where N is octal digits 7-11 of the instructions word.
Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) | Digital Equipment Corporation
Normally, the machine would require 36 bits or 12 octal digits to be written for each instruction used in the machine.
Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) | Digital Equipment Corporation
Communication is done completely via the typewriter in either octal numbers, decimal numbers, or alphanumeric codes.
Preliminary Specifications: Programmed Data Processor Model Three (PDP-3) | Digital Equipment Corporation

octal

[ ŏk′təl ]

Relating to a number system having a base of 8. Each place in an octal number represents a power of 8. Octal notation has often been used in computer programming because three-digit binary numbers are readily converted into one-digit octal numbers from 0 to 7.

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