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The Baudot code ( French pronunciation: [boˈdo]) is an early character encoding for telegraphy invented by Émile Baudot in the 1870s. [1] It was the predecessor to the International Telegraph Alphabet No. 2 (ITA2), the most common teleprinter code in use before ASCII. Each character in the alphabet is represented by a series of five bits ...
As of Unicode version 15.1, there are 149,878 characters with code points, covering 161 modern and historical scripts, as well as multiple symbol sets.This article includes the 1,062 characters in the Multilingual European Character Set 2 subset, and some additional related characters.
The Universal Coded Character Set ( UCS, Unicode) is a standard set of characters defined by the international standard ISO / IEC 10646, Information technology — Universal Coded Character Set (UCS) (plus amendments to that standard), which is the basis of many character encodings, improving as characters from previously unrepresented typing ...
The numbers in the names of the encodings indicate the number of bits per code unit (for UTF encodings) or the number of bytes per code unit (for UCS encodings and UTF-1). UTF-8 and UTF-16 are the most commonly used encodings. UCS-2 is an obsolete subset of UTF-16; UCS-4 and UTF-32 are functionally equivalent. UTF encodings include:
In many popular fonts the Unicode "superscript" and "subscript" characters are actually numerator and denominator glyphs. Unicode has subscripted and superscripted versions of a number of characters including a full set of Arabic numerals. [1] These characters allow any polynomial, chemical and certain other equations to be represented in plain ...
The lexicographical order is one way of formalizing word order given the order of the underlying symbols. The formal notion starts with a finite set A, often called the alphabet, which is totally ordered. That is, for any two symbols a and b in A that are not the same symbol, either a < b or b < a .
Number of rhyme schemes for a poem with n lines Tale of Genji chapter symbols, including diagrams of the first 52 set partitions. The number of different possible rhyme schemes for an n-line poem is given by the Bell numbers, which for n = 1, 2, 3, ... are 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 115975, .. (sequence A000110 in the OEIS).
The "2" in ITA 2 is because the original Baudot code became the basis for ITA 1. ITA 2 remained the standard telegraph code in use until the 1960s and was still in use in places well beyond then. The ITA 2 code, in its punched tape form Computer age. The teleprinter was invented in 1915. This is a printing telegraph with a typewriter-like ...