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  2. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    This method requires the memorization of squares from 1 to a where a is the absolute difference between n and 100. For example, students who have memorized their squares from 1 to 24 can apply this method to any integer from 76 to 124. The square of n (i.e., 100 ± a) is 100(100 ± 2a) + a 2

  3. Windows 10 - Wikipedia

    en.wikipedia.org/wiki/Windows_10

    Shortly after the suit was reported on by the Seattle Times, Microsoft confirmed it was updating the GWX software once again to add more explicit options for opting out of a free Windows 10 upgrade; [365] [366] [363] the final notification was a full-screen pop-up window notifying users of the impending end of the free upgrade offer, and ...

  4. Microsoft Windows - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Windows

    Windows is a product line of proprietary graphical operating systems developed and marketed by Microsoft.It is grouped into families and sub-families that cater to particular sectors of the computing industry – Windows (unqualified) for a consumer or corporate workstation, Windows Server for a server and Windows IoT for an embedded system.

  5. History of computing hardware - Wikipedia

    en.wikipedia.org/wiki/History_of_computing_hardware

    It could be used to add and subtract, and with a moveable carriage the operator could also multiply, and divide by a process of long multiplication and long division. [25] It utilised a stepped drum similar in conception to that invented by Leibniz. Mechanical calculators remained in use until the 1970s.

  6. John von Neumann - Wikipedia

    en.wikipedia.org/wiki/John_von_Neumann

    Von Neumann's method used a pivoting algorithm between simplices, with the pivoting decision determined by a nonnegative least squares subproblem with a convexity constraint (projecting the zero-vector onto the convex hull of the active simplex). Von Neumann's algorithm was the first interior point method of linear programming. [274]

  7. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    Pregnancy is divided into three trimesters, each lasting for approximately three months. [4] The exact length of each trimester can vary between sources. The first trimester begins with the start of gestational age as described above, that is, the beginning of week 1, or 0 weeks + 0 days of gestational age (GA).

  8. Nintendo Entertainment System - Wikipedia

    en.wikipedia.org/wiki/Nintendo_Entertainment_System

    In Poland, the NES had its release on October 6, 1994 along with the SNES and the Game Boy [64] [65]. In November 1994, Nintendo signed an agreement with Steepler to permit the continued sale of the Dendy, an unauthorized hardware clone of the Famicom, in Russia in exchange for also distributing the Super Nintendo Entertainment System.