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  2. IBM 604 - Wikipedia

    en.wikipedia.org/wiki/IBM_604

    IBM 604 Electronic Calculator at NEMO national science museum in Amsterdam. Note plugboard control panel used to program the 604, at bottom.. The IBM 604 Electronic Calculating Punch was the world's first mass-produced electronic calculator along with its predecessor the IBM 603. [1]

  3. IBM 601 - Wikipedia

    en.wikipedia.org/wiki/IBM_601

    The factors could be up to eight decimal digits long. [1] The 601 was introduced in 1931 and was the first IBM machine that could do multiplication. [2] [3] In 1936 W. J. Eckert connected a modified 601 to a 285 tabulator and an 016 duplicating punch through a custom switch he designed and used the combined setup to perform scientific ...

  4. G. H. Mumm - Wikipedia

    en.wikipedia.org/wiki/G._H._Mumm

    The tirage or bottling of champagne at G. H. Mumm & Co. (1879) Messrs. G. H. Mumm & Co.'s vendangeoir at Verzenay (1879) Mumm cellars in Reims. It was founded by three brothers: Jacobus, Gottlieb and Phillip Mumm, German winemakers from the Rhine valley, along with G. Heuser and Friedrich Giesler on March 1, 1827, as P. A. Mumm Giesler et Co.

  5. HP-16C - Wikipedia

    en.wikipedia.org/wiki/HP-16C

    HP has never made another calculator specifically for programmers, [2] but has incorporated many of the HP-16C's functions in later scientific and graphing calculators, for example the HP-42S (1988) and its successors. Like many other vintage HP calculators, the HP-16C is now highly sought-after by collectors. [14]

  6. Curta - Wikipedia

    en.wikipedia.org/wiki/Curta

    The Curta was conceived by Curt Herzstark in the 1930s in Vienna, Austria.By 1938, he had filed a key patent, covering his complemented stepped drum. [3] [4] This single drum replaced the multiple drums, typically around 10 or so, of contemporary calculators, and it enabled not only addition, but subtraction through nines complement math, essentially subtracting by adding.

  7. TI-59 / TI-58 - Wikipedia

    en.wikipedia.org/wiki/TI-59_/_TI-58

    The TI-59 is an early programmable calculator, that was manufactured by Texas Instruments from 1977. It is the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules" (an insertable ROM chip, capable of holding 5000 program steps).

  8. Volume fraction - Wikipedia

    en.wikipedia.org/wiki/Volume_fraction

    Volume percent is the concentration of a certain solute, measured by volume, in a solution.It has as a denominator the volume of the mixture itself, as usual for expressions of concentration, [2] rather than the total of all the individual components’ volumes prior to mixing:

  9. Casio graphic calculators - Wikipedia

    en.wikipedia.org/wiki/Casio_graphic_calculators

    The first model in the series, called the fx-CG100, retains the same power source as its predecessors (4 AAA batteries) instead of Li-ion batteries used by contemporary calculators and also adopts a USB C connector for connecting with a computer (instead of a mini-USB connector) while retaining the 2.5 mm I/O connector for connecting to other ...