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  2. HP-27 - Wikipedia

    en.wikipedia.org/wiki/HP-27

    A HP 27. The HP-27 was a hand-held scientific and financial, but not programmable, calculator made by Hewlett-Packard between 1976 and 1978. Unlike all previous HP's pocket calculators, the HP-27 could do mathematic, statistic and business operations. It used Reverse Polish Notation (RPN) for calculations, working on a four-level stack (x,y,z,t ...

  3. HP-27S - Wikipedia

    en.wikipedia.org/wiki/HP-27S

    The HP-27S was a pocket calculator produced by Hewlett-Packard, introduced in 1988, and discontinued between 1990 and 1993 (sources vary). It was the first HP scientific calculator to use algebraic entry instead of RPN , and though it was labelled scientific , it also included features associated with specialized business calculators.

  4. Tru64 UNIX - Wikipedia

    en.wikipedia.org/wiki/Tru64_UNIX

    Tru64 UNIX is a discontinued 64-bit UNIX operating system for the Alpha instruction set architecture (ISA), currently owned by Hewlett-Packard (HP). Previously, Tru64 UNIX was a product of Compaq, and before that, Digital Equipment Corporation (DEC), where it was known as Digital UNIX (originally DEC OSF/1 AXP).

  5. HP 20b - Wikipedia

    en.wikipedia.org/wiki/HP_20b

    The HP 20b Business Consultant (F2219A, codenamed "Little Euro" [6]) is a financial calculator published in 2008 by Hewlett-Packard. Its function is similar to HP 10bII and includes scientific and statistical functions.

  6. HP-35 - Wikipedia

    en.wikipedia.org/wiki/HP-35

    The HP-35 was 5.8 inches (150 mm) long and 3.2 inches (81 mm) wide, said to have been designed to fit into one of William Hewlett's shirt pockets. Was the first scientific calculator to fly in space in 1973. [5] HP-35 calculators were carried on the Skylab 3 and Skylab 4 flights, between July 1973 and February 1974. [6]

  7. HP 35s - Wikipedia

    en.wikipedia.org/wiki/HP_35s

    The HP 35s uses either Reverse Polish Notation (RPN) or algebraic infix notation as input. Other features of the HP 35s include: [5] Two-line alphanumeric LCD; Over 800 memory registers (26 directly labelled, the others are accessed through the i,(i) and j,(j) indirect addresses. Scientific and statistical functions

  8. User guide - Wikipedia

    en.wikipedia.org/wiki/User_guide

    User manuals and user guides for most non-trivial PC and browser software applications are book-like documents with contents similar to the above list. They may be distributed either in print or electronically. Some documents have a more fluid structure with many internal links. The Google Earth User Guide [4] is an example of

  9. Owner's manual - Wikipedia

    en.wikipedia.org/wiki/Owner's_manual

    If owners lose their car manual, they can either order a replacement from a dealer, pick up a used one secondhand, or download a PDF version of the manual online. [4] In 2017, IBM released IBM Watson Artificial Intelligence to understand and answer questions in natural driver language. [5] "Ask Mercedes" was the first in a wave of these vehicle ...