HP-65 Hewlet-Packard First Programmable Calculator |
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| "Introduced on January 19 1974, this was the fourth handheld electronic calculator sold by HP, and the third scientific model. "Superstar" was its code name, and the HP-65 lived up to this name; it was the first programmable model, which led to its being dubbed "the world's first handheld computer." Wlodek Mier-Jedrzejowicz. | |
| Source: MoHPC - The Museum of HP Calculators | |