![]() Hewlett-Packard retained the numerical analyst William Kahan of UC Berkeley, the architect of the IEEE 754 standard for floating-point arithmetic, to design the numerical algorithms implemented by the calculators. HP has (as of 2015) never made another programmer's calculator, but has incorporated the 16C's functions in later calculator models. A number of specialized functions are provided to assist the programmer, including left- and right-shifting, masking, and bitwise logical operations. It can display numbers in hexadecimal, decimal, octal and binary, and convert numbers from one base to another. The HP-16C is a computer programmer's calculator, designed to assist in debugging. The HP-11C is a mid-range scientific programmable calculator. ![]() Poor sales led to a very short market life, making it one of the most difficult of the series to find today. Designed to be an introductory calculator, it was still costly compared to the competition, and many looking at an HP would just step up to the better HP-11C. ![]() While a useful general purpose RPN calculator, the HP-11C offered twice as much for only a slight increase in price. The 10C was a basic scientific programmable calculator. The HP-10C is the last and lowest-featured calculator in this line, even though its number would suggest an earlier origin. HP-12C – business/financial calculator (1981–present).The HP calculators Voyager series consisted of five models, some of which were manufactured in several variants (with years of production): Nearly identical in appearance, each model provided different capabilities and was aimed at different user markets. All members of this series are programmable, use Reverse Polish Notation, and feature continuous memory. The Hewlett-Packard Voyager series of calculators were introduced by Hewlett-Packard in 1981.
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