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  2. Non-return-to-zero - Wikipedia

    en.wikipedia.org/wiki/Non-return-to-zero

    The binary signal is encoded using rectangular pulse-amplitude modulation with polar NRZ(L), or polar non-return-to-zero-level code. In telecommunications, a non-return-to-zero (NRZ) line code is a binary code in which ones are represented by one significant condition, usually a positive voltage, while zeros are represented by some other significant condition, usually a negative voltage, with ...

  3. Line code - Wikipedia

    en.wikipedia.org/wiki/Line_code

    An example of coding a binary signal using rectangular pulse-amplitude modulation with polar non-return-to-zero code An example of bipolar encoding, or AMI. Encoding of 11011000100 in Manchester encoding An example of differential Manchester encoding An example of biphase mark code An example of MLT-3 encoding

  4. Area codes 678, 470, and 943 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_678,_470,_and_943

    Area codes 678, 470, and 943 are telephone area codes in the North American Numbering Plan (NANP) for the U.S. State of Georgia in the Atlanta metropolitan area. The area codes are assigned in an overlay plan to a combined numbering plan area (NPA) consisting of 404 (Atlanta and its suburbs inside Interstate 285 ) and 770 (Atlanta suburbs and ...

  5. Pulse-code modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-code_modulation

    The word pulse in the term pulse-code modulation refers to the pulses to be found in the transmission line. This perhaps is a natural consequence of this technique having evolved alongside two analog methods, pulse-width modulation and pulse-position modulation , in which the information to be encoded is represented by discrete signal pulses of ...

  6. E-NRZ-L - Wikipedia

    en.wikipedia.org/wiki/E-NRZ-L

    In telecommunication, an enhanced-non-return-to-zero-level (E-NRZ-L) line code is a binary code in which 1s are represented as low level and 0s are represented as high level condition with no other neutral or rest condition, similar to Non-return-to-zero; However, the major enhancement over NRZ is the addition of a parity bit (usually odd parity) to the end of the bit stream.

  7. Modified AMI code - Wikipedia

    en.wikipedia.org/wiki/Modified_AMI_code

    If the result is an even number then +00+ or −00− is used. To determine which polarity to use, one must look at the pulse preceding the four zeros. If 000V form must be used then V simply copies the polarity of last pulse, if B00V form must be used then B and V chosen will have the opposite polarity of the last pulse.

  8. Bipolar encoding - Wikipedia

    en.wikipedia.org/wiki/Bipolar_encoding

    1337 number, as represented in bipolar encoding, known as AMI (Alternate mark inversion), where : 1337 10 = 10100111001 2. In telecommunication, bipolar encoding is a type of return-to-zero (RZ) line code, where two nonzero values are used, so that the three values are +, −, and zero.

  9. List of ICD-9 codes 290–319: mental disorders - Wikipedia

    en.wikipedia.org/wiki/List_of_ICD-9_codes_290...

    The DSM-5 (2013), the current version, also features ICD-9-CM codes, listing them alongside the codes of Chapter V of the ICD-10-CM. On 1 October 2015, the United States health care system officially switched from the ICD-9-CM to the ICD-10-CM. [1] [2] The DSM is the authoritative reference work in diagnosing mental disorders in the world.