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  2. Sharp EL-8 - Wikipedia

    en.wikipedia.org/wiki/Sharp_EL-8

    Although it was still too bulky to easily fit in a pocket, [1] it was an important step toward the development of the pocket calculator. [2] Ad showing the calculator's original price. The EL-8's original price in Japan was 84,800 Japanese yen. [3] The retail price in 1971 was US$ 345 (equivalent to US$ 2,308 in 2021). [1] [7]

  3. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    The first American-made pocket-sized calculator, the Bowmar 901B (popularly termed The Bowmar Brain), measuring 5.2 by 3.0 by 1.5 inches (132 mm × 76 mm × 38 mm), came out in the Autumn of 1971, with four functions and an eight-digit red LED display, for US$240, while in August 1972 the four-function Sinclair Executive became the first ...

  4. HP-19C/-29C - Wikipedia

    en.wikipedia.org/wiki/HP-19C/-29C

    HP-19C calculator HP-29C with AC-powered battery charger. The HP-19C and HP-29C were scientific/engineering pocket calculators made by Hewlett-Packard between 1977 and 1979. They were the most advanced and last models of the "20" family (compare HP-25) and included Continuous Memory (battery-backed CMOS memory) as a standard feature.

  5. Pound sign - Wikipedia

    en.wikipedia.org/wiki/Pound_sign

    The pound sign (£) is the symbol for the pound unit of sterling – the currency of the United Kingdom and its associated Crown Dependencies and British Overseas Territories and previously of Great Britain and of the Kingdom of England. The same symbol is used for other currencies called pound, such as the Egyptian and Syrian pounds.

  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. Gibson ES-345 - Wikipedia

    en.wikipedia.org/wiki/Gibson_ES-345

    The Gibson ES-345T had a price of $345 in the standard sunburst finish. [1] From the guitar's 1959 introduction through 1979, 10,560 ES-345s were shipped. [ 2 ] Gibson designed the guitar to create a guitar which could be used to produce jazz but with a maple block running through the guitar to allow the versatility of a solid body electric guitar.

  8. Economic history of the United States - Wikipedia

    en.wikipedia.org/wiki/Economic_history_of_the...

    Construction of the first macadamized road in the United States (1823). In the foreground, workers are breaking stones "so as not to exceed 6 ounces [170 g] in weight or to pass a two-inch [5 cm] ring". [75] There were only a few roads outside of cities at the beginning of the 19th century, but turnpikes were being built.

  9. Ancient Mesopotamian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Ancient_Mesopotamian_units...

    A series of old Babylonian weights ranging from 1 mina to 3 shekels. Mass was measured by the EN system E. Values below are an average of weight artifacts from Ur and Nippur. The ± value represents 1 standard deviation. All values have been rounded to second digit of the standard deviation.