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  2. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [1] [2] [3] On an expression or formula calculator, one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression.

  3. Shift operator - Wikipedia

    en.wikipedia.org/wiki/Shift_operator

    ⁠ The shift operator acting on functions of a real variable is a unitary operator on ⁠ (). In both cases, the (left) shift operator satisfies the following commutation relation with the Fourier transform: F T t = M t F , {\displaystyle {\mathcal {F}}T^{t}=M^{t}{\mathcal {F}},} where M t is the multiplication operator by exp( itx ) .

  4. Symbolab - Wikipedia

    en.wikipedia.org/wiki/Symbolab

    Symbolab is an answer engine [1] that provides step-by-step solutions to mathematical problems in a range of subjects. [2] It was originally developed by Israeli start-up company EqsQuest Ltd., under whom it was released for public use in 2011. In 2020, the company was acquired by American educational technology website Course Hero. [3] [4]

  5. Horner's method - Wikipedia

    en.wikipedia.org/wiki/Horner's_method

    With a Supplement, Containing Two Other Methods of Solving Equations, Derived from the Same Principle (PDF). Richard Watts. Archived from the original (PDF) on 2014-01-06 Holdred's method is in the supplement following page numbered 45 (which is the 52nd page of the pdf version). Horner, William George (July 1819). "A new method of solving ...

  6. HP-45 - Wikipedia

    en.wikipedia.org/wiki/HP-45

    The HP-45 is the second scientific pocket calculator introduced by Hewlett-Packard, adding to the features of the HP-35. It was introduced in 1973 [1] with an MSRP of US$395 [2] (equivalent to $2,711 in 2023). [3] Especially noteworthy was its pioneering addition of a shift key that gave other keys alternate functions.

  7. Double dabble - Wikipedia

    en.wikipedia.org/wiki/Double_dabble

    The principal steps of the algorithms Double dabble (Binary to BCD) Reverse double dabble (BCD to binary) For each group of input four bits: If group >= 5 add 3 to group Left shift into the output digits Right shift into the output binary For each group of four input bits: If group >= 8 subtract 3 from group

  8. Shewhart individuals control chart - Wikipedia

    en.wikipedia.org/wiki/Shewhart_individuals...

    The normal distribution is NOT assumed nor required in the calculation of control limits. Thus making the IndX/mR chart a very robust tool. This is demonstrated by Wheeler using real-world data [4], [5] and for a number of highly non-normal probability distributions.

  9. Booth's multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Booth's_multiplication...

    If they are 00, do nothing. Use P directly in the next step. If they are 11, do nothing. Use P directly in the next step. Arithmetically shift the value obtained in the 2nd step by a single place to the right. Let P now equal this new value. Repeat steps 2 and 3 until they have been done y times. Drop the least significant (rightmost) bit from P.