Last Updated
：2025/11/20
ones' complement
Noun
Japanese Meaning
（コンピュータ）与えられた n 桁の2進数から 2ⁿ-1 を引くことで得られる数。これは各ビットを反転（0を1、1を0に）した結果と同じで、1の補数と呼ばれる。
Sense（1）
Sense（2）
(computing)
The
convention
by
which
bit
patterns
with
high
bit
0
represent
positive
numbers
from
0
to
2ⁿ⁻¹-1
directly,
while
bit
patterns
with
high
bit
1
represent
negative
numbers
from
0
to
-(2ⁿ⁻¹-1),
n
being
the
word
size
of
the
machine,
and
the
numeric
complement
of
a
number
is
its
ones'
complement.
（ plural ）
Quizzes for review
(computing) The number obtained by subtracting a given n-digit binary number from 2ⁿ-1 (which yields the same result as the logical complement).
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See correct answer
ones' complement
When implementing the checksum, she used the ones' complement of the message to produce a compact error-detection code.
See correct answer
When implementing the checksum, she used the ones' complement of the message to produce a compact error-detection code.
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