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  2. 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 ...

  3. 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.

  4. 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.

  5. HP-12C - Wikipedia

    en.wikipedia.org/wiki/HP-12C

    128 × 79 × 15 mm. The HP-12C is a financial calculator made by Hewlett-Packard (HP) and its successor HP Inc. as part of the HP Voyager series, introduced in 1981. It is HP's longest and best-selling product and is considered the de facto standard among financial professionals. There have been multiple revisions over the years, with newer ...

  6. HP 33s - Wikipedia

    en.wikipedia.org/wiki/HP_33s

    2× CR2032 batteries. Weight. 119 g. Dimensions. 158 × 83 × 16 mm. The HP 33s (F2216A) was a scientific calculator marketed by Hewlett-Packard. It was introduced in 2003 as the successor to the HP 32SII, [ 1] and discontinued on the introduction of its successor the HP 35s in 2007.

  7. 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 ...

  8. Chained dollars - Wikipedia

    en.wikipedia.org/wiki/Chained_dollars

    Chained dollars, also known as "chained consumer price index" or "chained CPI," is a measure of inflation that takes into account changes in consumer behavior in response to changes in prices. It is used to adjust certain economic variables, such as tax brackets and Social Security payments, for inflation.

  9. Starlink is adding a 1TB data cap for usage during peak hours

    www.engadget.com/starlink-data-cap-peak-hours...

    Fixed business service has peak-hour caps ranging from 500GB to 3TB, with extra full-speed data costing $1 per gigabyte. Mobility users have no Priority Access for recreational use, while ...