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The affine cipher is a type of monoalphabetic substitution cipher, where each letter in an alphabet is mapped to its numeric equivalent, encrypted using a simple mathematical function, and converted back to a letter. The formula used means that each letter encrypts to one other letter, and back again, meaning the cipher is essentially a ...
The ASCII text-encoding standard uses 7 bits to encode characters. With this it is possible to encode 128 (i.e. 2 7) unique values (0–127) to represent the alphabetic, numeric, and punctuation characters commonly used in English, plus a selection of Control characters which do not represent printable characters.
In numerology, isopsephy (/ ˈ aɪ s ə p ˌ s ɛ f i /; from Greek ἴσος (ísos) 'equal' and ψῆφος (psêphos) 'count', lit. ' pebble ') or isopsephism is the practice of adding up the number values of the letters in a word to form a single number. [1]
Base32 is an encoding method based on the base-32 numeral system.It uses an alphabet of 32 digits, each of which represents a different combination of 5 bits (2 5).Since base32 is not very widely adopted, the question of notation—which characters to use to represent the 32 digits—is not as settled as in the case of more well-known numeral systems (such as hexadecimal), though RFCs and ...
As the alphabet ended, various multiplicative methods were used for the expression of higher numbers in the different systems. In the Greek alphabetic system, for multiples of 1,000, the hasta sign was placed to the left below a numeral-sign to indicate that it should be multiplied by 1,000.
The individual segments of a sixteen-segment display Arabic numerals, letters of the ISO basic Latin alphabet and punctuation on a typical 16-segment display. A sixteen-segment display (SISD) is a type of display based on sixteen segments that can be turned on or off to produce a graphic pattern.
This is a list of some binary codes that are (or have been) used to represent text as a sequence of binary digits "0" and "1". Fixed-width binary codes use a set number of bits to represent each character in the text, while in variable-width binary codes, the number of bits may vary from character to character.