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  2. HP calculators - Wikipedia

    en.wikipedia.org/wiki/HP_calculators

    HP's first scientific calculator, HP-35 With this in mind, HP built the HP 9100 desktop scientific calculator. This was a full-featured calculator that included not only standard "adding machine" functions but also powerful capabilities to handle floating-point numbers, trigonometric functions , logarithms, exponentiation, and square roots .

  3. HP 39/40 series - Wikipedia

    en.wikipedia.org/wiki/HP_39/40_series

    The hardware is identical to the HP 49G/39G series (complete with rubber keyboard). In contrast to the 39g, it integrates the same computer algebra system (CAS) also found in the HP 49G, HP CAS. Unlike its "bigger brothers", the HP 40g has no flags to set/mis-set resulting in a "better behaved" calculator for straightforward math analysis.

  4. HP-22S - Wikipedia

    en.wikipedia.org/wiki/HP-22S

    The HP-22S is an electronic calculator from the Hewlett-Packard company which is algebraic and scientific. This calculator is comparable to the HP-32S. A solver was included instead of programming. It had the same constraints as the 32S, lacking enough RAM for serious use. Functions available include TVM and unit conversions.

  5. HP-21 - Wikipedia

    en.wikipedia.org/wiki/HP-21

    A HP-21. The HP-21 was a scientific calculator produced by Hewlett-Packard between 1975 and 1978. [1] It was designed as a replacement for the HP-35, and was one of a set of three calculators, the others being the HP-22 and HP-25, which were similarly built but aimed at different markets.

  6. HP 49/50 series - Wikipedia

    en.wikipedia.org/wiki/HP_49/50_series

    The HP 50g (F2229A) is the latest calculator in the 49/50 series, introduced in 2006. The most apparent change is a revised color scheme, returning the unit to a more traditional HP calculator appearance. Using black plastic for the entire body, white, orange and yellow are used for function shift keys.

  7. HP-34C - Wikipedia

    en.wikipedia.org/wiki/HP-34C

    The calculator was superseded, in 1982, by the HP-15C.. Although it is argued the HP-41C (introduced late 1979 and only a matter of months after the HP-34C) was a replacement for the HP-34C, they were in fact differentiated as much by price (the HP-34C being 50% that of the HP-41C) as by functionality and performance (the HP-41C being the first HP LCD-based and module-expandable calculator ...

  8. FOCAL character set - Wikipedia

    en.wikipedia.org/wiki/FOCAL_character_set

    In computing FOCAL character set refers to a group of 8-bit single byte character sets introduced by Hewlett-Packard since 1979. It was used in several RPN calculators supporting the FOCAL programming language, like the HP-41C / CV / CX as well as the later HP-42S , [ 1 ] [ 2 ] which was introduced in 1988 [ 1 ] [ 2 ] and produced up to 1995.

  9. HP calculator character set - Wikipedia

    en.wikipedia.org/wiki/HP_calculator_character_set

    Modified HP Roman-8, a variant of Hewlett-Packard's Roman-8 used on some calculators between 1986 and 2015; RPL character set, a character set used on various Hewlett-Packard RPL calculators between 1989 and 2015; Unicode, a character set used on some new calculators since 2011 (39gII, Prime) [a]

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