A Loaded Deck of Cards

Several magnetic card inserts containing programs customers could use with HP's programmable calculators. Enlarge
Back of the carrying case used to hold magnetic card inserts for HP calculators. Enlarge
Front of the carrying case for magnetic program cards including the names HP67 and HP97 and the phrase Standard Pac. Enlarge
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Date: 1970s–1980s

To assist the users of its programmable calculators, Hewlett-Packard began offering magnetic card inserts pre-programmed with popular scientific and financial calculation applications. Customers could also buy blank inserts and use them to save their own programs.

Tags: 1970s • 1980s

( C ) HPCA

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