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  2. United States dollar - Wikipedia

    en.wikipedia.org/wiki/United_States_dollar

    The same coinage act also set the value of an eagle at 10 dollars, and the dollar at 1 ⁄ 10 eagle. It called for silver coins in denominations of 1, 1 ⁄ 2, 1 ⁄ 4, 1 ⁄ 10, and 1 ⁄ 20 dollar, as well as gold coins in denominations of 1, 1 ⁄ 2 and 1 ⁄ 4 eagle. The value of gold or silver contained in the dollar was then converted ...

  3. History of the United States dollar - Wikipedia

    en.wikipedia.org/wiki/History_of_the_United...

    This created a new U.S. dollar that was backed by 1.50 grams (23.22 grains) of gold. However, the previous dollar had been represented by 1.60 g (24.75 grains) of gold. The result of this revaluation, which was the first devaluation of the U.S. dollar, was that the value in gold of the dollar was reduced by 6%.

  4. Present value - Wikipedia

    en.wikipedia.org/wiki/Present_value

    Present value. In economics and finance, present value ( PV ), also known as present discounted value, is the value of an expected income stream determined as of the date of valuation. The present value is usually less than the future value because money has interest -earning potential, a characteristic referred to as the time value of money ...

  5. 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 ...

  6. Amortization calculator - Wikipedia

    en.wikipedia.org/wiki/Amortization_calculator

    Amortization calculator. An amortization calculator is used to determine the periodic payment amount due on a loan (typically a mortgage ), based on the amortization process. The amortization repayment model factors varying amounts of both interest and principal into every installment, though the total amount of each payment is the same.

  7. HP-35 - Wikipedia

    en.wikipedia.org/wiki/HP-35

    Dimensions. Length: 5.8 inches (150 mm), width: 3.2 inches (81 mm), height: 0.7–1.3 inches (18–33 mm) The HP-35 was Hewlett-Packard 's first pocket calculator and the world's first scientific pocket calculator: [ 1] a calculator with trigonometric and exponential functions. It was introduced in 1972.

  8. 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.

  9. The Masked Singer (American TV series) season 10 - Wikipedia

    en.wikipedia.org/wiki/The_Masked_Singer...

    The tenth season of the American television series The Masked Singer premiered on Fox on September 27, 2023, following a preview special that aired on September 10, and concluded on December 20, 2023. The season was won by singer Ne-Yo as "Cow", with actor/singer John Schneider finishing second as "Donut", actress/singer Janel Parrish placing ...