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  2. Morse code - Wikipedia

    en.wikipedia.org/wiki/Morse_code

    Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. [3] [4] Morse code is named after Samuel Morse, one of the early developers of the system adopted for electrical telegraphy .

  3. Caesar cipher - Wikipedia

    en.wikipedia.org/wiki/Caesar_cipher

    In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.

  4. Mnemonic major system - Wikipedia

    en.wikipedia.org/wiki/Mnemonic_major_system

    An advantage of the major system is that it is possible to use a computer to automatically translate the number into a set of words. One can then pick the best of several alternatives. Such programs include "Numzi" "Rememberg" "Fonbee", the freeware "2Know", and the website "pinfruit". Example words

  5. Enigma machine - Wikipedia

    en.wikipedia.org/wiki/Enigma_machine

    t. e. The Enigma machine is a cipher device developed and used in the early- to mid-20th century to protect commercial, diplomatic, and military communication. It was employed extensively by Nazi Germany during World War II, in all branches of the German military.

  6. Character encoding - Wikipedia

    en.wikipedia.org/wiki/Character_encoding

    Despite no longer referring to specific page numbers in a standard, many character encodings are still referred to by their code page number; likewise, the term "code page" is often still used to refer to character encodings in general.

  7. NATO phonetic alphabet - Wikipedia

    en.wikipedia.org/wiki/NATO_phonetic_alphabet

    To create the code, a series of international agencies assigned 26 clear-code words (also known as "phonetic words") acrophonically to the letters of the Roman alphabet, with the goal that the letters and numbers would be easily distinguishable from one another over radio and telephone.

  8. Telegraph code - Wikipedia

    en.wikipedia.org/wiki/Telegraph_code

    A telegraph code is one of the character encodings used to transmit information by telegraphy. Morse code is the best-known such code. Telegraphy usually refers to the electrical telegraph, but telegraph systems using the optical telegraph were in use before that.

  9. Leet - Wikipedia

    en.wikipedia.org/wiki/Leet

    Alternatively, an abbreviation can be leet-ified into a valid hexadecimal color code. "614D05" is a valid color HEX-code, referencing to GLaDOS; "572355" is a dark purple color, coming from "STRESS" word; "748452" is a mild green color, derived from "TABASQ" (stilyzed "tabasco").

  10. Google Translate - Wikipedia

    en.wikipedia.org/wiki/Google_Translate

    Google Translate is a web-based free-to-user translation service developed by Google in April 2006. [11] It translates multiple forms of texts and media such as words, phrases and webpages. Originally, Google Translate was released as a statistical machine translation service. [11] The input text had to be translated into English first before ...

  11. Binary number - Wikipedia

    en.wikipedia.org/wiki/Binary_number

    A binary number is a number expressed in the base-2 numeral system or binary numeral system, a method of mathematical expression which uses only two symbols: typically "0" and "1" . The base-2 numeral system is a positional notation with a radix of 2 .