Editing HP calculators (section)

== History ==
In the 1960s, [[Hewlett-Packard]] was becoming a diversified [[electronics]] company with product lines in electronic [[Measuring instrument|test equipment]], scientific instrumentation, and [[medical electronics]], and was just beginning its entry into [[computer]]s. The corporation recognized two opportunities: it might be possible to automate the instrumentation that HP was producing, and HP's customer base were likely to buy a product that could replace the [[slide rule]]s and [[adding machine]]s that were being used for computation.
[[File:HP-35 Red Dot.jpg|thumb|HP's first scientific calculator, HP-35|150px ]]

With this in mind, HP built the [[Hewlett-Packard 9100A|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|floating-point]] numbers, [[Trigonometry|trigonometric functions]], [[Logarithm|logarithms, exponentiation, and square roots]].

This new calculator was well received by the customer base, but [[William Reddington Hewlett|William Hewlett]] saw additional opportunities if the desktop calculator could be made small enough to fit into his shirt pocket. He charged his engineers with this exact goal using the size of his shirt pocket as a guide.{{Citation needed|date=June 2011}} The result was the [[HP-35]] calculator. This calculator provided functionality that was revolutionary for a pocket calculator at that time.{{Citation needed|date=June 2011}}
[[File:HP-41CV Calculator.jpg|thumb|HP's first calculator with alpha-numeric display, HP-41C|150px ]]


Through the years, HP released several calculators that varied in their mathematical capabilities, programmability, and I/O capabilities. Some of them could be used (via [[HP-IL]]) to control the instruments other Hewlett Packard divisions produced.

{{anchor|Moravia}}On 1 November 2021, Moravia Consulting spol.&nbsp;s&nbsp;r.o.<ref>[https://hpcalcs.com/ Calculators] hpcalcs.com {{Webarchive|url=https://web.archive.org/web/20230807202700/https://hpcalcs.com/ |date=2023-08-07  }}</ref> (for all markets but the Americas) and [[Royal Consumer Information Products, Inc.]]<ref>[https://hpofficesupply.com/ Office supply] hpcalcs.com {{Webarchive|url=https://web.archive.org/web/20230922151029/https://hpofficesupply.com/ |date=2023-09-22  }}</ref> (for the Americas) became the licensees of [[HP Development Company, L.P.]] to continue the development, production, distribution, marketing and support of any HP-branded calculators.