A character encoding system consists of a code that pairs each character from a given repertoire with something else¿such as a bit pattern, sequence of natural numbers, octets, or electrical pulses¿in order to facilitate the transmission of data (generally numbers or text) through telecommunication networks or for data storage. Other terms such as character set, character map, and code page are used almost interchangeably, but these terms have related but distinct meanings described below.
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Typesetting
Typesetting is the composition of text by means of types. Typesetting requires the prior process of designing a font and storing it in some manner. Typesetting is the retrieval of the stored letters (called sorts in mechanical systems and glyphs in digital systems) and the ordering of them according to a language's orthography for visual display.
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Unicode
Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems.
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Tuple
In mathematics and computer science, a tuple is an ordered list of elements. In set theory, an (ordered) -tuple is a sequence (or ordered list) of elements, where is a positive integer. There is also one 0-tuple, an empty sequence. An -tuple is defined inductively using the construction of an ordered pair. Tuples are usually written by listing the elements within parentheses "" and separated by commas; for example, denotes a 5-tuple.
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Sequence
In mathematics, a sequence is an ordered list of objects (or events). Like a set, it contains members (also called elements), and the number of ordered element (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and exactly the same elements can appear multiple times at different positions in the sequence. A sequence is a discrete function. For example, (C, R, Y) is a sequence of letters that differs from (Y, C, R), as the ordering matters.
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