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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. Chart of accounts - Wikipedia

    en.wikipedia.org/wiki/Chart_of_accounts

    A chart of accounts (COA) is a list of financial accounts and reference numbers, grouped into categories, such as assets, liabilities, equity, revenue and expenses, and used for recording transactions in the organization's general ledger.

  4. Coded mark inversion - Wikipedia

    en.wikipedia.org/wiki/Coded_mark_inversion

    In telecommunication, coded mark inversion (CMI) is a non-return-to-zero (NRZ) line code. It encodes zero bits as a half bit time of zero followed by a half bit time of one, and while one bits are encoded as a full bit time of a constant level. The level used for one bits alternates each time one is coded.

  5. Line code - Wikipedia

    en.wikipedia.org/wiki/Line_code

    Each transmitted code word in a constant-weight code is designed such that every code word that contains some positive or negative levels also contains enough of the opposite levels, such that the average level over each code word is zero. Examples of constant-weight codes include Manchester code and Interleaved 2 of 5. Use a paired disparity ...

  6. BAI (file format) - Wikipedia

    en.wikipedia.org/wiki/BAI_(file_format)

    BAI, or the BAI file format, is a file format for performing electronic cash management balance reporting. The BAI format was developed and previously maintained by the Bank Administration Institute (BAI). [1]

  7. USPS reverses ban on small packages from China - AOL

    www.aol.com/news/usps-reverses-ban-small...

    (The Center Square) – The U.S. Postal Service on Wednesday announced the reversal of its ban on small value packages from China. The ban lasted just one day and came as a result of President ...

  8. Unit interval (data transmission) - Wikipedia

    en.wikipedia.org/wiki/Unit_interval_(data...

    The unit interval is the minimum time interval between condition changes of a data transmission signal, also known as the pulse time or symbol duration time.A unit interval (UI) is the time taken in a data stream by each subsequent pulse (or symbol).

  9. Signal-to-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Signal-to-noise_ratio

    where is the signal mean or expected value and is the standard deviation of the noise, or an estimate thereof. [ note 2 ] Notice that such an alternative definition is only useful for variables that are always non-negative (such as photon counts and luminance ), and it is only an approximation since E ⁡ [ X 2 ] = σ 2 + μ 2 {\displaystyle ...