1

Definition from Wiktionary, a free dictionary

The Universal Character Set

Unicode name	DIGIT ONE
Basic Latin	U+0031

Contents 1 Translingual 1.1 Etymology 1.2 Symbol 1.2.1 See also 1.2.2 Alternative forms 1.2.3 Derived terms 1.3 See also 2 English 2.1 Pronunciation 2.2 Symbol 2.2.1 Derived terms 2.3 Adjective

[edit] Translingual

[edit] Etymology

Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script १ (1), “‘éka’”)), possibly influenced by Roman numeral Ⅰ.

[edit] Symbol

1

1. The cardinal number one, a single thing or unit.
2. A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal.

   15 × 134 = 2010

   0010 0011₂

   0x1000E001

3. (mathematics) the identity element with respect to multiplication in a ring.

   a×1 = a

4. (computer science) bit state corresponding to binary digit 1, or on or true.
5. (mathematics) A Boolean or truth value corresponding to true.

   f : B^k → B : B = {0, 1}

[edit] See also

• (Arabic digits): 0  1  2  3  4  5  6  7  8  9

[edit] Alternative forms

Arabic (Eastern) numerals: ١ Arabic (Western) numerals: 1 Bengali numerals: ১ Chinese numerals: 壹 , 一 Ethiopic numerals: ፩ Gujarati numerals: ૧ Gurmukhi numerals: ੧ Hebrew numerals: א Hindi numerals: १

Kannada numerals: ೧ Khmer numerals: ១ Lao numerals: ໑ Limbu numerals: ᥇ Malayalam numerals: ൧ Mongolian numerals: ᠑ Myanmar numerals: ၁ Ol Chiki numerals: ᱑ Oriya numerals: ୧

Osmanya numerals: 𐒡 Persian numerals: ۱ Roman numerals: I Saurashtra numerals: ꣑ Sundanese numerals: ᮱ Tamil numerals: ௧ Telugu numerals: ౧ Thai numerals: ๑ Tibetan numerals: ༡

[edit] Derived terms

[edit] See also

• 1 (number) in Wikipedia

Other representations of 1:

Morse code: ·–––– Braille: ⠁ ASL Manual: 1@Side-PalmBack

Signal flag (ICS and NATO):

Semaphore: After showing "numeric"

Styles

The digit ‘1’ in a digital seven segment display.

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[edit] English

[edit] Pronunciation

• enPR: wŭn, IPA: /wʌn/, IPA: /wan/ SAMPA: /wVn/
•  Audio (US)^{help, file}

  Rhymes: -ʌn

[edit] Symbol

1 (plural 1s)

1. The cardinal number one, a single thing or unit.

   She only counted 1.

2. numeral corresponding to the number one.

   Formula 1 racing car

[edit] Derived terms

• (ordinal) 1st

[edit] Adjective

1 (not comparable)

1. Of a single thing or unit; of cardinality one.

   A pint weighs 1 pound.