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20-pair colour code (Australia) The 20-pair colour code is a colour code used in Australia to identify individual conductors in a kind of electrical telecommunication wiring for indoor use, known as twisted pair cables. The colours are applied to the insulation that covers each conductor. The first colour is chosen from one group of five colours.
Codes with minimum Hamming distance d = 2 are degenerate cases of error-correcting codes and can be used to detect single errors. The parity bit is an example of a single-error-detecting code. The parity bit is an example of a single-error-detecting code.
Schematic depiction of a concatenated code built upon an inner code and an outer code. This is a pictorial representation of a code concatenation, and, in particular, the Reed–Solomon code with n=q=4 and k=2 is used as the outer code and the Hadamard code with n=q and k=log q is used as the inner code. Overall, the concatenated code is a -code.
G40.20-13/G40.21-13: General requirements for rolled or welded structural quality steel/ Structural quality steel W178.1-14: Certification of welding inspection organizations W178.2-14: Certification of welding inspectors W47.1-09 (R2014) Certification of companies for fusion welding of steel W47.2-11 (R2015)
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 .
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CAF. Central African Republic. AFC (1968) [32] CAM. Cambodia. CAB (1964) KHM (1972) as Khmer Republic.