One
From the Simple English Wikipedia, the free encyclopedia that anyone can change
One (1) is a natural number after zero and before two. It represents a single item. A human typically has one head, nose, mouth, and navel (or belly-button). The Roman numeral is I.
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[change] Language
It is also a pronoun, as in, "one says...", "one does...". It is used in place of "a person says..." or "an individual does...".
[change] Mathematics
In mathematics, one is also the only number with this special fact: Any number multiplied by 1 equals that number.
[change] Computer science
The number one is important for computer science because it is together with Zero a part of the Binary numeral system. In Machine code and in Programming languages one means true. Zero means false.
[change] Other Meanings
- In Germany and Austria One is the Grade for "very good". It's the best Grade of 6 possible Grades in Germany and the best of 5 possible Grades in Austria.
- In the Numerology the one is a symbol for everything, the beginning and God
