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  2. Product activation - Wikipedia

    en.wikipedia.org/wiki/Product_activation

    An early example of product activation was in the MS-DOS program D'Bridge Email System written by Chris Irwin, a commercial network system for BBS users and Fidonet. The program generated a unique serial number which then called the author's BBS via a dialup modem connection. Upon connection, the serial number was validated.

  3. Pivot table - Wikipedia

    en.wikipedia.org/wiki/Pivot_table

    Pivot tables are not created automatically. For example, in Microsoft Excel one must first select the entire data in the original table and then go to the Insert tab and select "Pivot Table" (or "Pivot Chart"). The user then has the option of either inserting the pivot table into an existing sheet or creating a new sheet to house the pivot table.

  4. Unique identifier - Wikipedia

    en.wikipedia.org/wiki/Unique_identifier

    serial numbers, assigned incrementally or sequentially, by a central authority or accepted reference. random numbers, selected from a number space much larger than the maximum (or expected) number of objects to be identified. Although not really unique, some identifiers of this type may be appropriate for identifying objects in many practical ...

  5. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  6. Symbolic Link (SYLK) - Wikipedia

    en.wikipedia.org/wiki/SYmbolic_LinK_(SYLK)

    The whole number part is a number of days from the Jan 1 1900 (if the O record contains the ;V0 directive, specifying 1900 as the starting point for calculations), the fraction is the number of seconds divided by 86400 (60*60*24, number of seconds in a day).

  7. Item Unique Identification - Wikipedia

    en.wikipedia.org/wiki/Item_Unique_Identification

    UID Construct 1, composed of Issuing Agency Code, an Enterprise Identifier, and a Serial Number unique within the Enterprise; UID Construct 2, composed of Issuing Agency Code, an Enterprise Identifier, a Part Number and a Serial Number (unique within the Part Number) The following IUID Equivalents are also approved: Vehicle Identification ...

  8. Get Black Friday savings already at Walmart: Shop the 10 best ...

    www.aol.com/lifestyle/get-black-friday-savings...

    This 14" HP number's less than $200, fangs to Walmart. There's also some zombie-themed decor at more than half off — apparently there's a holiday of some kind coming up. Really, every witch way ...

  9. Ignition SCADA - Wikipedia

    en.wikipedia.org/wiki/Ignition_SCADA

    Consider an example from the expression language found in Microsoft_excel. Excel can calculate a cell's value dynamically by typing an expression such as "=SUM(C5:C10)", which performs the arithmetic sum of those 6 cells. The expression language in Ignition functions similarly.