U
From Freepedia
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U was originally a capital letter like J and it was only Pierre de la Ramée who made the distinction between capital and small letter. See V.
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Alternative representations
Uniform represents the letter U in the NATO phonetic alphabet.
In international Morse code the letter U is DitDitDah: · · -
In Braille the letter U is represented as ⠥ (in Unicode), the dot pattern:
X. .. XX
Computing
In Unicode the capital U is codepoint U+0055 and the lowercase u is U+0075.
The ASCII code for capital U is 85 and for lowercase u is 117; or in binary 01010101 and 01110101, correspondingly.
The EBCDIC code for capital U is 228 and for lowercase u is 164.
The numeric character references in HTML and XML are "U" and "u" for upper and lower case respectively.
Meanings for U
- In biochemistry, U is the symbol for uracil.
- In calendars, U is often an abbreviation for Sunday, for use when S is being used for Saturday.
- In chemistry, U is the symbol for uranium.
- In communication, u is an abbreviation for the word "you" in SMS or instant message.
- In computing, 1 U (= 44 mm or 1.75 inch) is a standard unit of height of a piece of equipment or computer chassis in a 19-inch rack, also called a rack unit (RU) or a pizza box.
- In education, U is an unsatisfactory grade.
- In electrical engineering, U is the symbol for voltage.
- In history, U is king of Goryeo(Korea).
- In linguistics, U refers to speech markers of upper class British speakers. British novelist Nancy Mitford brought to popular attention the linguistic terminology "U" and "non-U" to indicate the speech markers of upper class and non-upper class British speakers respectively.
- U also stands for the popular Shia name Umar as Umar is seen as too sacred to be said aloud
- In mathematics, <math>\cup</math> stands for union and the upside-down <math>\cap</math> stands for intersection (both are operators on sets). A U-set is a set of uniqueness.
- In mathematics, U stands for the unitary group.
- In metrology, u is the symbol for unified atomic mass unit.
- In military science, U- is a prefix used for German submarines during World War II, (e.g., U-20), which was short for Unterseeboot. They were also referred to as "U-boats" by the Allies.
- In the Unicode standard, character code points are labelled "U+" followed by a number in hexadecimal.
- University of Miami, owing to its distinctive split-U logo
- University of Utah or "U of U" (or just University in general).
- In Internet slang, "u" or "U" is referred to as "you" due to the similarity in pronounciation
See also
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