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10. The Champion
Series (1986 - 1992) |
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HP 18C
Introduced on June 1, 1986, this was the first HP calculator
of the clamshell design series. It was more than an
algebraic calculator, as it included graphing and a
date/time/alarm feature like a personal organizer. It also
included an infrared port for wireless printing. A major
feature of these calculators was the expansion of the
4-level stack (X, Y, Z and T) to one with as many levels as
were needed to carry the objects in the stack.
Code name: Champion. Original price: $175 |
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HP 28C
Introduced on January 5, 1987, this was the scientific model
of the series. The biggest innovation was that it could work
with symbolic expressions. It was ready before the HP 18C
(the business model) but introduction was postponed to
introduce the business model first.
Code name: Paladin.
Original price: $235 |
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HP 19B
Introduced on January 4, 1988, this was an upgrade of the
18C with 8K of RAM. A note taker was added along with an
interesting innovation: one of six languages could be chosen
to display the error messages in (although the US version
has only one language).
Code name: Tycoon.
Original price: $235 |
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HP 28S
Introduced on January 4, 1988, it expanded the 28C by
increasing the memory to 32K. CPU speed to 1 MHz and adding
directory and subdirectory structure for variables.
Code name: Orlando.
Original price: $235 |
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HP 19B-II
Introduced on January 1, 1991,
this is an HP 19B with the option of doing calculations in
RPN mode.
Code name: Tycoon. Original price: $175 |
