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  2. List of battery sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_battery_sizes

    3LR12 (4.5-volt), D, C, AA, AAA, AAAA (1.5-volt), A23 (12-volt), PP3 (9-volt), CR2032 (3-volt), and LR44 (1.5-volt) batteries. This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use. The complete nomenclature for a battery specifies ...

  3. Sinclair Executive - Wikipedia

    en.wikipedia.org/wiki/Sinclair_Executive

    56 by 138 by 9 millimetres (2.20 in × 5.43 in × 0.35 in) The Sinclair Executive was the world's first "slimline" pocket calculator, and the first to be produced by Clive Sinclair 's company Sinclair Radionics. Introduced in 1972, the calculator was produced in at least two versions with different keyboard markings; a variant called the ...

  4. HP-35 - Wikipedia

    en.wikipedia.org/wiki/HP-35

    Introduced at US$395 (equivalent to $2,900 in 2023), [2] like HP's first scientific calculator, the desktop 9100A, it used reverse Polish notation (RPN) rather than what came to be called "algebraic" entry. The "35" in the calculator's name came from the number of keys. The original HP-35 was available from 1972 to 1975.

  5. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  6. Sinclair Wrist Calculator - Wikipedia

    en.wikipedia.org/wiki/Sinclair_Wrist_Calculator

    The Wrist Calculator was launched in February 1977 by Sinclair Instrument, a company established in parallel to Sinclair Radionics when the latter started to encounter financial difficulties. [1] It was only available as a mail-order kit, and cost around £11. [1] [2] Despite the difficulty in assembling the kit due to the small size of the ...

  7. HP-12C - Wikipedia

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

    Power consumption. 0.25 mW. Weight. 113 g. Dimensions. 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.

  8. Sinclair Sovereign - Wikipedia

    en.wikipedia.org/wiki/Sinclair_Sovereign

    The Sinclair Sovereign was a high-end calculator introduced by Clive Sinclair 's company Sinclair Radionics in 1976. It was an attempt to escape from the unprofitable low end of the market, and one of the last calculators Sinclair produced. Made with a case of pressed steel that a variety of finishes, it cost between £30 and £60 at a time ...

  9. HP-19B - Wikipedia

    en.wikipedia.org/wiki/HP-19B

    HP-19B, introduced on 4 January 1988, along with the HP-17B, HP-27S and the HP-28S, and replaced by the HP-19BII (F1639A) in January 1990, [2] was a simplified Hewlett Packard business model calculator, like the 17B. It had a clamshell design, like the HP-18C, HP-28C and 28S.

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