Letter frequency "The Gold-Bug", where the method is successfully applied to decipher a message instructing on the whereabouts of a treasure hidden by Captain Kidd. Letter frequencies had a strong effect on the design of some keyboard layouts. The most frequent letters are on the bottom row of the Blickensderfer typewriter, and the home row of the Dvorak Simplified Keyboard. There are three ways to count letter frequency that result in very different charts for common letters. The first method, used in the chart below, is to count letter frequency in root words of a dictionary. The second is to include all
Three-letter acronym Three-letter acronym A three-letter acronym (TLA), or three-letter abbreviation, is an abbreviation, specifically an acronym, alphabetism, or initialism, consisting of three letters. These are usually the initial letters of the words of the phrase abbreviated, and are written in capital letters (upper case); three-letter abbreviations such as "etc." and "Mrs." are not three-letter acronyms, but "TLA" is a TLA (an example of an autological abbreviation). Most three-letter abbreviations are "initialisms": all the letters are pronounced as the names of letters, as in "APA" . Some are acronyms pronounced as a word; computed axial tomography, CAT, is almost always pronounced as