11. The Pioneer Series (1988 - today)
	HP 17B Introduced on January 4, 1988, along with the HP 19B, 27S (below) and the 28S. It was a simplified business model, like the HP 19B. There were two versions, the US one working in English only, and the international one with a choice of six languages. Code name: Trader. Original price: $110
	HP 27S Introduced on January 4, 1988, it had fewer functions than the 19B, but included functions to operate on binary, hexadecimal and octal numbers. No RPN available unfortunately. It did not sell well and had a significant price drop. Code name: Mentor. Original price: $110
	HP 22S Introduced on June 1, 1988, it was a very simple scientific model. The solver used to solve equations was a simplified version of the solver on other models. It had most of its features hidden in a menu structure controlled by a single blue shift key. Code name: Plato. Original price: $60
	HP 32S Introduced on June 1, 1988, along with the HP 22S above. Its capabilities came very close to the HP 41's, though they were hidden again in a menu structure controlled by a single orange shift key. It included the RPN version of the equation solver. Code name: Leonardo. Original price: $70
	HP 14B Introduced on October 31, 1988, it was designed to come below the HP 19B and 17B Business calculators. A 50th Anniversary Limited Edition of this calculator was also made (see picture on the left). Code name: Midas. Original price: $80
	HP 42S Introduced on October 31, 1988, this was the replacement of the HP 41. It included extensive matrix and complex number calculations. Its small size and powerful features made it a favorite among scientific calculator users. The code name Davinci shows the close relationship with the 32S Leonardo (above), but the price directed that this one was a much more powerful model. Code name: Davinci. Original price: $120
	HP 10B Introduced on January 3, 1989. This is a low cost business model, promoted as a "Business Student" model. Code name: Ernst. Original price: $50
	HP 20S Introduced on January 3, 1989 in the US and in 1988 in Europe. It was priced low as it was an attempt to enter the student market. It had a significant number of functions and an extensive library of built-in functions. Code name: Erni. Original price: $50
	HP 21S Introduced on January 3, 1989 at the same time as the HP 20S, this model has many statistical functions not found in other calculators, which were easily accessible through two shift keys. Code name: Monte-Carlo. Original price: $50
	HP 17B II Still in production. It is the replacement of the HP 17B business calculator, has no new code name and no new features, with one exception: HP introduced the RPN mode as an optional mode of operation. Code name: Trader. Original price: $110
	HP 32S II Introduced on March 1, 1991. Even though it had the same name as the HP 32S, it was a considerable redesign, incorporating all the functions of the discontinued HP 22S. The ability to store and solve algebraic functions was added. It can work in both algebraic and RPN modes. Code name: Nardo. Original price: $70
	HP 82240B An infrared-only thermal printer manufactured to operate with the Pioneer series calculators above, also works with the Charlemagne series. Street price: $150

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