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The HP-28C (Paladin)

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Introduced on the 5th January 1987, discontinued the 4th of January 1988

With the HP-28C, Hewlett-Packard completely revamped the scientific calculator. This model did symbolic math, used named variables, understood many data types and was the first full RPL calculator.

One year after its introduction HP lanced the HP-28S with more memory and a faster processor.

HP28C
Serial number: 2720A10231

 

Getting Started Manual and Reference Manual

HP28C HP28C

 

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HP-28C related links:

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