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I am interested in acquiring and preserving older Hewlett-Packard
calculators, including hardware,
associated peripherals, manuals and other documentation.
If you have any of this equipment or know where to find it, please send me an e-mail. The HP-28C calculator was introduced in 1987. It was soon replaced by the HP-28S, which had more memory (32K instead of 2K) and additional features.
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The following advertisement appeared in the May 1987 issue of
IEEE Spectrum magazine.
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Click here for the Calculators page.
Click here for the Home page.
Click here for the Wanted page.
Updated February 18, 2006
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