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  2. List of Sony Walkman products - Wikipedia

    en.wikipedia.org/wiki/List_of_Sony_Walkman_products

    The MZ-N10 was released in 2002. It was Sony's '10th Anniversary' product, released 10 years after the introduction of the MiniDisc format in 1992. The case was made from a magnesium alloy, and the unit featured a built-in lithium-ion battery which provided 24 hours of battery life. The MZ-N10 allowed music to be transferred from a PC at up to ...

  3. United States one-hundred-dollar bill - Wikipedia

    en.wikipedia.org/wiki/United_States_one-hundred...

    The United States one-hundred-dollar bill (US$100) is a denomination of United States currency. The first United States Note with this value was issued in 1862 and the Federal Reserve Note version was first produced in 1914. [2] Inventor and U.S. Founding Father Benjamin Franklin has been featured on the obverse of the bill since 1914, [3 ...

  4. Motorola DynaTAC - Wikipedia

    en.wikipedia.org/wiki/Motorola_DynaTAC

    A DynaTAC 8000X; the first commercially available mobile phone from 1983. Electrical engineer Martin Cooper of Motorola made the first publicized handheld mobile phone call on a prototype DynaTAC model on April 3, 1973. This is a reenactment in 2007. The DynaTAC is a series of cellular telephones manufactured by Motorola from 1983 to 1994.

  5. Large denominations of United States currency - Wikipedia

    en.wikipedia.org/wiki/Large_denominations_of...

    According to the U.S. Department of Treasury website, "The present denominations of our currency in production are $1, $2, $5, $10, $20, $50 and $100. The purpose of the United States currency system is to serve the needs of the public and these denominations meet that goal. Neither the Department of the Treasury nor the Federal Reserve System ...

  6. Obsolete denominations of United States currency - Wikipedia

    en.wikipedia.org/wiki/Obsolete_denominations_of...

    The United States also issued fractional currency for a brief time in the 1860s and 1870s, in several denominations each less than a dollar. Denomination. Obverse. Reverse. Portrait. 3 cent note. George Washington. 5 cent note.

  7. History of laptops - Wikipedia

    en.wikipedia.org/wiki/History_of_laptops

    R2E CCMC Portal laptop. The portable microcomputer "Portal", of the French company R2E Micral CCMC, officially appeared in September 1980 at the Sicob show in Paris.The Portal was a portable microcomputer designed and marketed by the studies and developments department of the French firm R2E Micral in 1980 at the request of the company CCMC specializing in payroll and accounting.

  8. List of presidents of the United States on currency - Wikipedia

    en.wikipedia.org/wiki/List_of_presidents_of_the...

    2007 Dollar (obverse), 2nd of four U.S. presidents issued in 2007. Banknotes. National Bank Notes. All $100 first charter period (on back in the engraved version of the painting Declaration of Independence by John Trumbull; Federal Reserve Notes. All $2 (on back in the engraved version of Trumbull's Declaration of Independence painting)

  9. History of the lithium-ion battery - Wikipedia

    en.wikipedia.org/wiki/History_of_the_lithium-ion...

    Before lithium-ion: 1960-1975. 1960s: Much of the basic research that led to the development of the intercalation compounds that form the core of lithium-ion batteries was carried out in the 1960s by Robert Huggins and Carl Wagner, who studied the movement of ions in solids. [1] In a 1967 report by the US military, plastic polymers were already ...