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  2. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    Binary logarithms are also used in computer science, where the binary system is ubiquitous; in music theory, where a pitch ratio of two (the octave) is ubiquitous and the number of cents between any two pitches is a scaled version of the binary logarithm, or log 2 times 1200, of the pitch ratio (that is, 100 cents per semitone in conventional ...

  3. Binary logarithm - Wikipedia

    en.wikipedia.org/wiki/Binary_logarithm

    An easy way to calculate log 2 n on calculators that do not have a log 2 function is to use the natural logarithm (ln) or the common logarithm (log or log 10) functions, which are found on most scientific calculators. To change the logarithm base from e or 10 to 2 one can use the formulae: [50] [53]

  4. Sharp EL-500W series - Wikipedia

    en.wikipedia.org/wiki/Sharp_EL-500W_series

    Sharp EL-500W series include a range of scientific calculators made by Sharp Corporation, capable of displaying 2 lines, with multi-line playback. It is the successor to the Sharp EL-500V series . Features

  5. Sharp EL-5120 - Wikipedia

    en.wikipedia.org/wiki/Sharp_EL-5120

    The Sharp EL-5120 is a scientific programmable calculator. It has about 1 KB of total RAM available to the user, and has 4 basic operational modes: Real mode: it is the basic operational mode for directly performing standard algebraic and statistical calculations, as well as evaluating user-defined functions and numerically integrating them.

  6. Sharp QT-8D - Wikipedia

    en.wikipedia.org/wiki/Sharp_QT-8D

    Sharp QT-8D Micro Compet Main PCB. By the standards of its time, the QT-8D is quite a fast calculator. Dividing 99999999 by 1, which is the worst case for the simple long division method used on many calculators, takes roughly 200 milliseconds, and addition and subtraction are nearly instantaneous. [1]

  7. List of logarithmic identities - Wikipedia

    en.wikipedia.org/wiki/List_of_logarithmic_identities

    Logarithms can be used to make calculations easier. For example, two numbers can be multiplied just by using a logarithm table and adding. These are often known as logarithmic properties, which are documented in the table below. [2] The first three operations below assume that x = b c and/or y = b d, so that log b (x) = c and log b (y) = d.

  8. Moral Injury - The Huffington Post

    projects.huffingtonpost.com/moral-injury/joseph...

    Some troops leave the battlefield injured. Others return from war with mental wounds. Yet many of the 2 million Iraq and Afghanistan veterans suffer from a condition the Defense Department refuses to acknowledge: Moral injury.

  9. Sharp EL-8 - Wikipedia

    en.wikipedia.org/wiki/Sharp_EL-8

    The Sharp EL-8, also known as the ELSI-8, [1] was one of the earliest mass-produced hand-held electronic calculators [1] and the first hand-held calculator to be made by Sharp. Introduced around the start of 1971, [ note 1 ] it was based on Sharp's preceding QT-8D and QT-8B compact desktop calculators and used the same logic circuits, but it ...