英和和英

名詞

binary decimal ‎(複数形 binary decimals)

1. (dated) A binary (base-2) numeral.
   • 1938, G. H. Hardy and E. M. Wright, An Introduction to the Theory of Numbers, section 9.7:

     Any positive integer up to ${\displaystyle 2^{n}-1}$ inclusive can be expressed uniquely as a binary decimal of ${\displaystyle n}$ figures, i.e., as a sum ${\displaystyle \sum _{0}^{n-1}a_{s}2^{s}}$, where every ${\displaystyle a_{s}}$ is ${\displaystyle 0}$ or ${\displaystyle 1}$.

2. (informal) Used other than as an idiom: A decimal (numeral written as a concatenation of successive negative powers of the base) in base 2..