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Letter Frequency
Letter frequency is the number of times letters of the alphabet appear on average in written language. Letter frequency analysis dates back to the Arab mathematician Al-Kindi (c. 801–873 AD), who formally developed the method to break ciphers. Letter frequency analysis gained importance in Europe with the development of movable type in 1450 AD, where one must estimate the amount of type required for each letterform. Linguists use letter frequency analysis as a rudimentary technique for language identification, where it is particularly effective as an indication of whether an unknown writing system is alphabetic, syllabic, or ideographic. The use of letter frequencies and frequency analysis plays a fundamental role in cryptograms and several word puzzle games, including Hangman, ''Scrabble'', ''Wordle'' and the television game show ''Wheel of Fortune''. One of the earliest descriptions in classical literature of applying the knowledge of English letter frequency to sol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Letter (alphabet)
A letter is a segmental symbol of a phonemic writing system. The inventory of all letters forms an alphabet. Letters broadly correspond to phonemes in the spoken form of the language, although there is rarely a consistent and exact correspondence between letters and phonemes. The word ''letter'', borrowed from Old French ''letre'', entered Middle English around 1200 AD, eventually displacing the Old English term ( bookstaff). ''Letter'' is descended from the Latin '' littera'', which may have descended from the Greek "διφθέρα" (, writing tablet), via Etruscan. Definition and usage A letter is a type of grapheme, which is a functional unit in a writing system: a letter (or group of letters) represents visually a phoneme (a unit of sound that can distinguish one word from another in a particular language). Letters are combined to form written words, just as phonemes are combined to form spoken words. A sequence of graphemes representing a phoneme is called a multigrap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wordle
''Wordle'' is a Browser game, web-based word game created and developed by Welsh people, Welsh software engineer Josh Wardle, and owned and published by The New York Times Company since 2022. Players have six attempts to guess a five-letter word, with feedback given for each guess in the form of colored tiles indicating when letters match or occupy the correct position. The mechanics are nearly identical to the 1955 pen-and-paper game Jotto and the television game show franchise ''Lingo (American game show), Lingo''. ''Wordle'' has a single daily solution, with all players attempting to guess the same word. Wardle created the game for himself and his partner to play, eventually making it public in October 2021. The game gained popularity in December 2021 after Wardle added the ability for players to copy their daily results as emoji squares, which were widely shared on Twitter. Many clones and variations of the game were also created, as were versions in languages besides Englis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptanalysis
Cryptanalysis (from the Greek ''kryptós'', "hidden", and ''analýein'', "to analyze") refers to the process of analyzing information systems in order to understand hidden aspects of the systems. Cryptanalysis is used to breach cryptographic security systems and gain access to the contents of encrypted messages, even if the cryptographic key is unknown. In addition to mathematical analysis of cryptographic algorithms, cryptanalysis includes the study of side-channel attacks that do not target weaknesses in the cryptographic algorithms themselves, but instead exploit weaknesses in their implementation. Even though the goal has been the same, the methods and techniques of cryptanalysis have changed drastically through the history of cryptography, adapting to increasing cryptographic complexity, ranging from the pen-and-paper methods of the past, through machines like the British Bombes and Colossus computers at Bletchley Park in World War II, to the mathematically advanced comput ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dvorak Keyboard Layout
Dvorak is a keyboard layout for English patented in 1936 by August Dvorak and his brother-in-law, William Dealey, as a faster and more ergonomic alternative to the QWERTY layout (the ''de facto'' standard keyboard layout). Dvorak proponents claim that it requires less finger motion and as a result reduces errors, increases typing speed, reduces repetitive strain injuries, or is simply more comfortable than QWERTY. Dvorak has failed to replace QWERTY as the most common keyboard layout, with the most oft pointed to reason being QWERTY was popularized 60 years prior to Dvorak's creation and Dvorak's advantages are debated and relatively minuscule. However, most major modern operating systems (such as Windows, macOS, Linux, iOS, Android, ChromeOS, and BSD) allow a user to switch to the Dvorak layout. The layout can be chosen for use with any hardware keyboard, regardless of printed characters on the keyboard. Several modifications were designed by the team directed by Dvorak or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Home Row
Touch typing (also called blind typing, or touch keyboarding) is a style of typing. Although the phrase refers to typing without using the sense of sight to find the keys—specifically, a touch typist will know their location on the keyboard through muscle memory—the term is often used to refer to a specific form of touch typing that involves placing the eight fingers in a horizontal row along the middle of the keyboard (the ''home row'') and having them reach for specific other keys. (Under this usage, typists who do not look at the keyboard but do not use home row either are referred to as hybrid typists.) Both two-handed touch typing and one-handed touch typing are possible. Frank Edward McGurrin, a court stenographer from Salt Lake City, Utah who taught typing classes, reportedly invented home row touch typing in 1888. On a standard QWERTY keyboard for English speakers the home row keys are: "ASDF" for the left hand and "JKL;" for the right hand. Most modern computer keyboa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blickensderfer Typewriter
The Blickensderfer Typewriter was invented by George Canfield Blickensderfer (1850–1917) and patented on August 4, 1891. Blickensderfer was the nephew of John Celivergos Zachos the inventor of the stenotype. Two models were initially unveiled to the public at the 1893 World's Columbian Exposition in Chicago, the Model 1 and the Model 5. His machines were originally intended to compete with larger Remington, Hammond and Yost typewriters, and were the first truly portable, full-keyboard typewriters. The design also enabled the typist to see the typed work at a time when most typewriters were under strike machines that concealed the writing. When Blickensderfer unveiled his small Model 5 at the 1893 World's Fair, and a stripped-down version of his larger more complex Model 1 machine, these revolutionary features attracted huge crowds and many orders. History The Blickensderfer typewriters were initially manufactured in a rented factory on Garden Street in Stamford, Connecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keyboard Layout
A keyboard layout is any specific physical, visual or functional arrangement of the keys, legends, or key-meaning associations (respectively) of a computer keyboard, mobile phone, or other computer-controlled typographic keyboard. is the actual positioning of keys on a keyboard. is the arrangement of the legends (labels, markings, engravings) that appear on those keys. is the arrangement of the key-meaning association or keyboard mapping, determined in software, of all the keys of a keyboard; it is this (rather than the legends) that determines the actual response to a key press. Modern computer keyboards are designed to send a scancode to the operating system (OS) when a key is pressed or released: this code reports only the key's row and column, not the specific character engraved on that key. The OS converts the scancode into a specific binary character code using a "scancode to character" conversion table, called the keyboard mapping table. This means that a physical keyb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doubled Letter
A digraph or digram (from the grc, δίς , "double" and , "to write") is a pair of characters used in the orthography of a language to write either a single phoneme (distinct sound), or a sequence of phonemes that does not correspond to the normal values of the two characters combined. Some digraphs represent phonemes that cannot be represented with a single character in the writing system of a language, like the English '' sh'' in ''ship'' and ''fish''. Other digraphs represent phonemes that can also be represented by single characters. A digraph that shares its pronunciation with a single character may be a relic from an earlier period of the language when the digraph had a different pronunciation, or may represent a distinction that is made only in certain dialects, like the English '' wh''. Some such digraphs are used for purely etymological reasons, like '' rh'' in English. Digraphs are used in some Romanization schemes, like the '' zh'' often used to represent the Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert Zim
Herbert Spencer Zim (July 12, 1909 – December 5, 1994) was a naturalist, author, editor and educator best known as the founder (1945) and editor-in-chief of the Golden Guides series of nature books. Biography Zim was born 1909 in New York City, but spent his childhood years in southern California. At the age of fourteen he returned to the east. He took his degrees (B.S. biologia, M.S. biologia, Ph.D. botanica) at Columbia University. Zim wrote or edited more than one hundred books on science, and in a thirty-year career teaching in the public schools introduced laboratory instruction into elementary school science. He is best known as the founder in 1945 (and, for twenty-five years, editor in chief) of the Golden Guides, pocket-size introductions for children to such subjects as fossils, zoology, microscopy, rocks and minerals, trees, wildflowers, dinosaurs, navigation and more. He was the sole or co-author for many of the books, which were valued for their clarity, accur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Kidd
William Kidd, also known as Captain William Kidd or simply Captain Kidd ( – 23 May 1701), was a Scottish sea captain who was commissioned as a privateer and had experience as a pirate. He was tried and executed in London in 1701 for murder and piracy. Kidd had captured a French ship, commanded by an English captain, as a prize. He had been commissioned by the Crown as a privateer for this expedition, but the political climate of England turned against him in this case. Some modern historians, for example Sir Cornelius Neale Dalton, deemed his piratical reputation unjust and said that he was acting as a privateer. Documents found in the early 20th century in London court papers supported Kidd's account of his actions. Life and career Early life and education Kidd was born in Dundee, Scotland prior to October 15, 1654. While claims have been made of alternate birthplaces, including Greenock and even Belfast, he said himself he came from Dundee in a testimony given by Kidd to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
