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The Playfair cipher uses a 5 * 5 table containing a key word or phrase. Memorization of the keyword and 4 simple rules was all that was required to create the 5 by 5 table and use the cipher. Memorization of the keyword and 4 simple rules was all that was required to create the 5 by 5 table and use the cipher.
Morse code is a variable-length telegraphy code, which traditionally uses a series of long and short pulses to encode characters. It relies on gaps between the pulses to provide separation between letters and words, as the letter codes do not have the "prefix property". This means that Morse code is not necessarily a binary system, but in a ...
A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence.
CelcomDigi Berhad (d.b.a. CelcomDigi), formerly known as Digi.Com Berhad (d.b.a. Digi), is a communications conglomerate and mobile service provider in Malaysia.Its largest shareholders are Axiata and Norwegian-based Telenor, who hold equal ownership in CelcomDigi at 33.1% each.
Like the "knock code", a Cyrillic script version is said to have been used by nihilist prisoners of the Russian czars. [5] The knock code is featured in Arthur Koestler's 1941 work Darkness at Noon. [6] Kurt Vonnegut's 1952 novel Player Piano also includes a conversation between prisoners using a form of tap code. The code used in the novel is ...
Short codes are five digits in length, and start with 5. The second digit generally indicates the maximum price, with 0 = completely free, 1 = standard text rate only, 3 = €0.60, and 7 having no maximum. Codes beginning 59 are ostensibly intended for adult services, but few if any of these codes are used. [13]
2 of 5 barcode (non-interleaved) POSTNET barcode. A two-out-of-five code is a constant-weight code that provides exactly ten possible combinations of two bits, and is thus used for representing the decimal digits using five bits. [1] Each bit is assigned a weight, such that the set bits sum to the desired value, with an exception for zero.
Telenor, Ooredoo, and Mytel numbers have 11 digits (10 digits without the 0) with the prefix. Telenor start with 097. Ooredoo start with 098 or 099. Mytel start with 096. MecTel start with 093. MPT start with 092, 094 or 095 (9 digits or 8 without the 0).