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  2. Mechanical calculator - Wikipedia

    en.wikipedia.org/wiki/Mechanical_calculator

    The mechanical calculator industry started in 1851 Thomas de Colmar released his simplified Arithmomètre, which was the first machine that could be used daily in an office environment. For 40 years, [ 58] the arithmometer was the only mechanical calculator available for sale and was sold all over the world.

  3. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    A modern scientific calculator with an LCD. An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics . The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the ...

  4. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    The TI-108 is a simple four-function calculator which uses single-step execution. The immediate execution mode of operation (also known as single-step, algebraic entry system ( AES) [ 7] or chain calculation mode) is commonly employed on most general-purpose calculators. In most simple four-function calculators, such as the Windows calculator ...

  5. Pascal's calculator - Wikipedia

    en.wikipedia.org/wiki/Pascal's_calculator

    Pascal's calculator (also known as the arithmetic machine or Pascaline) is a mechanical calculator invented by Blaise Pascal in 1642. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as the supervisor of taxes in Rouen. [ 2] He designed the machine to add and subtract two numbers ...

  6. Adding machine - Wikipedia

    en.wikipedia.org/wiki/Adding_machine

    Adding machine for the Australian pound c. 1910, note the complement numbering, and the columns set up for shillings and pence. An adding machine is a class of mechanical calculator, usually specialized for bookkeeping calculations. In the United States, the earliest adding machines were usually built to read in dollars and cents.

  7. Casio fx-7000G - Wikipedia

    en.wikipedia.org/wiki/Casio_fx-7000G

    The Casio FX-7000G is a calculator which is widely known as being the world's first graphing calculator available to the public. It was introduced to the public and later manufactured between 1985 and c. 1988. [ 2] Notable features are its ability to graph functions, [ 3] and that it is programmable. The calculator offers 82 scientific ...

  8. TI BASIC (TI 99/4A) - Wikipedia

    en.wikipedia.org/wiki/TI_BASIC_(TI_99/4A)

    On top of Minimal BASIC, TI added commands for text, graphics, and basic file operations like recording to tape or any other file system. Due to the specifics of the TI-99 platform, TI BASIC was most notable for its extremely slow performance, roughly half that of common machines, but conversely sported high numerical accuracy.

  9. Curta - Wikipedia

    en.wikipedia.org/wiki/Curta

    A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.

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